1. Bailey, J. M., Vasey, P. L., Diamond, L. M., Breedlove, S. M., Vilain, E., & Epprecht, M. (2016). Sexual orientation, controversy, and science. Psychological Science in the Public Interest, 17, 45–101.
2. Bertosa, B. (2009). Sacrifice to Eros and homosexuality in the Spartan army. War & Society, 28, 1–19.
3. Boswell, J. (1982/1983). Revolutions, universals and sexual categories. Salmagundi, 58-59, 89–113.
4. Campbell, D. A. (1982). Greek Lyric 1: Sappho and Alcaeus (Loeb Classical Library No. 142). Cambridge, USA: Harvard University Press.
5. Hollimon, S. E. (1997). The third gender in California: Twospirit undertakers among the Chumash and their neighbours. In C. Claassen & R. A. Joyce (Eds.), Women in prehistory: North America and Mesoamerica (pp. 173–188). Philadelphia: University of Pennsylvania Press.