Kass-Annese, B., & Danzer, H. (1992). The fertility awareness handbook: The natural guide to avoiding or achieving pregnancy (6th ed.). Hunter House.
Chicago Style (17th ed.) CitationKass-Annese, Barbara, and Hal Danzer. The Fertility Awareness Handbook: The Natural Guide to Avoiding or Achieving Pregnancy. 6th ed. Alameda, Calif: Hunter House, 1992.
MLA (9th ed.) CitationKass-Annese, Barbara, and Hal Danzer. The Fertility Awareness Handbook: The Natural Guide to Avoiding or Achieving Pregnancy. 6th ed. Hunter House, 1992.
Warning: These citations may not always be 100% accurate.