References
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- Fingarette, Herbert, (1969). Self-deception, London, Routledge Kegan & Paul, 52.
- Forsyth, Donelson R., (2013). Group Dinamics, Sixth edition, Pacific Grove, Brooks/Cole.
- Freedman, David, Pisani, Robert, Purves, Roger, (2007). Statistics, Fourth edition, New York, W. W. Norton & Company Inc., 346.