APA (7th ed.) Citation

Isay, R. A. (2009). Being homosexual: Gay men and their development (1. Vintage Books ed., rev. and updated.). Vintage Books.

Chicago Style (17th ed.) Citation

Isay, Richard A. Being Homosexual: Gay Men and Their Development. 1. Vintage Books ed., rev. and updated. New York: Vintage Books, 2009.

MLA (9th ed.) Citation

Isay, Richard A. Being Homosexual: Gay Men and Their Development. 1. Vintage Books ed., rev. and updated. Vintage Books, 2009.