APA Style

Tortora, Gerard J., Anagnostakos, Nicholas P.. (1990). Principles of Anatomy and Physiology (Sixth ed.). New York: Harper International.

Chicago Style

Tortora, Gerard J., Anagnostakos, Nicholas P.. Principles of Anatomy and Physiology. Sixth ed. New York: Harper International, 1990. Textbook.

MLA Style

Tortora, Gerard J., Anagnostakos, Nicholas P.. Principles of Anatomy and Physiology. Sixth ed. New York: Harper International, 1990. Textbook.

Turabian Style

Tortora, Gerard J., Anagnostakos, Nicholas P.. Principles of Anatomy and Physiology. Sixth ed. New York: Harper International, 1990. Textbook.