APA Style

Tortora, G, J., Grabowski, S, R. (1993). Principles of anatomy and physiology (7th ed.). New York: New York : HarperCollinsCollege.

MLA Style

Tortora, Gerard, J.., Grabowski, Sandra, Reynolds. "Principles of anatomy and physiology". 7th ed. New York: New York : HarperCollinsCollege, 1993. Text.