APA (7th ed.) Citation

Ulrichs, K. H. (1994). The riddle of "man-manly" love: The pioneering work on male homosexuality, volume II. New York: Prometheus Books.

Chicago Style (17th ed.) Citation

Ulrichs, Karl Heinrich. The Riddle of "Man-manly" Love: The Pioneering Work on Male Homosexuality, Volume II. New York: Prometheus Books, 1994.

MLA (8th ed.) Citation

Ulrichs, Karl Heinrich. The Riddle of "Man-manly" Love: The Pioneering Work on Male Homosexuality, Volume II. New York: Prometheus Books, 1994.

Warning: These citations may not always be 100% accurate.