APA-ийн эшлэл(7 дахь хэвлэлт)

Kippley, J. F., & Kippley, S. (1979). The art of natural family planning. Couple to couple League.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kippley, John F., ба Sheila Kippley. The Art of Natural Family Planning. Cincinnati: Couple to couple League, 1979.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kippley, John F., ба Sheila Kippley. The Art of Natural Family Planning. Couple to couple League, 1979.