APA (7th ed.) Citation

Hopson, J. L., & Wessells, N. K. (1990). Essentials of biology (international edition.). McGraw-Hill Publishing Company.

Chicago Style (17th ed.) Citation

Hopson, Janet L., and Norman K. Wessells. Essentials of Biology. international edition. New York: McGraw-Hill Publishing Company, 1990.

MLA (8th ed.) Citation

Hopson, Janet L., and Norman K. Wessells. Essentials of Biology. international edition. McGraw-Hill Publishing Company, 1990.