APA (7th ed.) Citation

Knight, J. F. (1979). What a married couple should knew about sex. Pacific Press.

Chicago Style (17th ed.) Citation

Knight, John F. What a Married Couple Should Knew About Sex. Mountain View: Pacific Press, 1979.

MLA (9th ed.) Citation

Knight, John F. What a Married Couple Should Knew About Sex. Pacific Press, 1979.