Cita APA (7th ed.)

Westheimer, R. K. (1994). Dr. Ruth's encyclopedia of sex. Continuum.

Cita Chicago (17th ed.)

Westheimer, Ruth K. Dr. Ruth's Encyclopedia of Sex. New York: Continuum, 1994.

Cita MLA (8th ed.)

Westheimer, Ruth K. Dr. Ruth's Encyclopedia of Sex. Continuum, 1994.