<bold>1. Aire, T. A., 2007:</bold> Spermatogenesis and testicular cycles. In <bold>Jamieson, B. M. G.</bold> (Ed.): <em>Reproductive Biology and Phylogeny of Birds</em>. Science Publishers, Enfield, New Hampshire, 279—347.
<bold>2. Duerden, J. E., 1912:</bold> The anatomy and physiology of the ostrich. C — The internal organs. <em>South African Agricultural Journal,</em> April/May, 1—27.
<bold>3. Elias, M. Z. J., Aire, T. A., Soley, J. T., 2007:</bold> Macroscopic features of arterial supply to the reproductive system of the male ostrich (<em>Struthio camelus</em>). <em>Anat. Histol. Embryol.</em>, 36, 255—262.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1111/j.1439-0264.2006.00740.x" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1111/j.1439-0264.2006.00740.x</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">17617101</dgpm:pub-id>
<bold>4. Elias, M. Z. J., Aire, T. A., Soley, J. T., 2008:</bold> Macroscopic features of the venous drainage of the reproductive system of the male ostrich (<em>Struthio camelus</em>). <em>Onderst. J. Vet. Res.</em>, 75, 289—298.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.4102/ojvr.v75i4.105" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.4102/ojvr.v75i4.105</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">19294985</dgpm:pub-id>
<bold>6. Fujihara, N., Nishiyama, H., Nakashima, N., 1976:</bold> Studies on the accessory reproductive organs in the drake. 2. Macroscopic and microscopic observations on the cloaca of the drake with special reference to the ejaculatory groove. <em>Poult. Sci.</em>, 55, 927—935.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.3382/ps.0550927" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.3382/ps.0550927</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">935059</dgpm:pub-id>
<bold>7. Gunawardana, V. K., Scott, M. G., 1978:</bold> On the structure of the vascular body in the domestic fowl. <em>Journal of Anatomy</em>, 127, 447—457.
<bold>9. King, A. S., 1993:</bold><em>Apparatus urogenitalis</em> (Systema urogenitale). In <bold>Baumel, J. J.</bold> (Ed.): <em>Handbook of Avian Anatomy</em>. Nomina Anatomica Avium, Academic Press, Cambridge, 329—390.
<bold>10. Knight, C. E., 1970:</bold><em>The Anatomy of Structures Involved in the Erection-dilution Mechanism in the Male Domestic Fowl</em>. Dissertation, Michigan State University, 129 pp.
<bold>11. Knight, C. E., 1984:</bold> Anatomy of the corpus vasculare paracloacale of the male turkey. <em>Poult. Sci.</em>, 63, 1883—1891.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.3382/ps.0631883" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.3382/ps.0631883</a></dgdoi:pub-id><dgpm:pub-id xmlns:dgpm="http://degruyter.com/resources/fetched-pubmed-id" pub-id-type="pmid">6483748</dgpm:pub-id>
<bold>12. Kudo, N., Sugimura, M., Yamano, S., 1975:</bold> Anatomical studies of corpus paracloacalis vascularis in cocks. <em>Jap. J. Vet. Res.</em>, 23, 1—10.
<bold>14. Montgomerie, R., Briskie, J. V., 2007:</bold> Anatomy and evolution of copulatory structures. In <bold>Jamieson, B. M. G.</bold> (Ed.): <em>Reproductive Biology and Phylogeny of Birds</em>. Science Publishers, Enfield, New Hampshire, 115—178.
<bold>18. Soley, J. T., Elias, M. Z. J., Aire, T. A., 2007:</bold> Variations in gross pattern of venous drainage of the ostrich male reproductive tract: A comparison with the general avian model. In <em>Proceedings of the 1st Conjoint International Conference on Fertility, Anatomy and Morphological Sciences. Lagos, Nigeria</em>, 35—36.
<bold>20. Yamano, S., Sugimura, M., Kudo, N., 1977:</bold> The lymphatic system of the <em>corpus paracloacalis</em> vascularis and the second fold in the male domestic fowl. <em>Jap. J. Vet. Res.</em>, 25, 93—98.