Cita APA (7th ed.)
Legend, J., & Foos, R. (1991). Guide to safe sex. Polygram video.
Cita Chicago (17th ed.)
Legend, Johnny, i Richard Foos. Guide to Safe Sex. [Gran Bretagna]: Polygram video, 1991.
Cita MLA (9th ed.)
Legend, Johnny, i Richard Foos. Guide to Safe Sex. Polygram video, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.