MLA

Strunk, Gordon B. The Inverted Sex : a Study of Homosexuality. Casanova Publishing Co., 0AD. https://collections.library.yale.edu/catalog/31910299.

APA, 6th edition

Strunk, G. B. (0 C.E.). The inverted sex : a study of homosexuality. Casanova Publishing Co. https://collections.library.yale.edu/catalog/31910299.