APA (7th ed.) Citation

Ehrlich, P. R., Holm, R. W., & Parnell, D. R. (1974). The process of evolution (2.ed.). McGraw-Hill Book Co.

Chicago Style (17th ed.) Citation

Ehrlich, Paul R., Richard W. Holm, and Dennis R. Parnell. The Process of Evolution. 2.ed. New York: McGraw-Hill Book Co, 1974.

MLA (9th ed.) Citation

Ehrlich, Paul R., et al. The Process of Evolution. 2.ed. McGraw-Hill Book Co, 1974.