APA (7th ed.) Citation
Kippley, J. F., & Kippley, S. (1979). The art of natural family planning. Couple to couple League.
Chicago Style (17th ed.) Citation
Kippley, John F., and Sheila Kippley. The Art of Natural Family Planning. Cincinnati: Couple to couple League, 1979.
MLA (9th ed.) Citation
Kippley, John F., and Sheila Kippley. The Art of Natural Family Planning. Couple to couple League, 1979.
Warning: These citations may not always be 100% accurate.