APA (7th ed.) Citation

Comfort, A. (1990). Joy of sex: = Freude am Sex (15. Aufl.). Ullstein.

Chicago Style (17th ed.) Citation

Comfort, Alex. Joy of Sex: = Freude Am Sex. 15. Aufl. Frankfurt am Main [u.a.]: Ullstein, 1990.

MLA (9th ed.) Citation

Comfort, Alex. Joy of Sex: = Freude Am Sex. 15. Aufl. Ullstein, 1990.

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