APA Citation

Ehrlich, P. R., Holm, R. W., & Soulé, M. E. (1973). Introductory biology. New York: McGraw-Hill.

Chicago Style Citation

Ehrlich, Paul R., Richard W. Holm, and Michael E. Soulé. Introductory Biology. New York: McGraw-Hill, 1973.

MLA Citation

Ehrlich, Paul R., Richard W. Holm, and Michael E. Soulé. Introductory Biology. New York: McGraw-Hill, 1973.

Warning: These citations may not always be 100% accurate.