Cita APA (7a ed.)

Celline, H. B., & Duncan, D. F. (1988). Homosexual pornography: Trends in content and form over a 25 year period. Psychology, 25(3-4), 37-41.

Cita Chicago Style (17a ed.)

Celline, H. B., y D. F. Duncan. "Homosexual Pornography: Trends in Content and Form over a 25 Year Period." Psychology 25, no. 3-4 (1988): 37-41.

Cita MLA (9a ed.)

Celline, H. B., y D. F. Duncan. "Homosexual Pornography: Trends in Content and Form over a 25 Year Period." Psychology, vol. 25, no. 3-4, 1988, pp. 37-41.