APA (7th ed.) Citation

Hardin, G., & Gillespie, E. L. (1954). Biology: Its human implications (2nd. ed.). Freeman.

Chicago Style (17th ed.) Citation

Hardin, Garrett, and Evan L. Gillespie. Biology: Its Human Implications. 2nd. ed. San Francisco: Freeman, 1954.

MLA (9th ed.) Citation

Hardin, Garrett, and Evan L. Gillespie. Biology: Its Human Implications. 2nd. ed. Freeman, 1954.