Deitz, David.
All About Great Medical Discoveries.
Eau Claire, Wisconsin: E.M. Hale and Company, 1978. Chapter 18.
———,
Fundamenta1 Concepts of Modern Biology.
Amsco School Publications, Inc. 315 Hudson Street, New York, NY 10013, 1981. Chapter 18.
Silverstein, Dr. Alvin and Virginia B.
The Endocrine System Hormones in the Living World.
Laidlaw Brothers, Publishers, River Forest, Illinois, 1982. Chapters 1 and 2.
Bell, Ruth and other co-authors.
Changing Bodies, Changing Lives.
Random House, New York. 1980. Chapter 1.
Michael-Prewitt, Renee. “Fertility Problems.” Essence, February 1988. pp 17, 150-152.
Merki, Mary Bronson.
Glencoe Health; Guide to Wellness
. Glencoe Pub lishing Company, Mission Hills California. Chapter 24 and 26.