Biber, Douglas & Jesse Egbert. 2023. What is a register? Accounting for linguistic and situational variation within – and outside of – textual varieties. Register Studies 5 (1). 1–22.
Love, Robbie, Claire Dembry, Andrew Hardie, Vaclav Brezina & Tony McEnery. 2017. The Spoken BNC2014: Designing and building a spoken corpus of everyday conversations. International Journal of Corpus Linguistics 22 (3). 319–344.