APA (7th ed.) Citation

Solbrig, O. T. (1966). Evolution and systematics (second printing.). Macmillan.

Chicago Style (17th ed.) Citation

Solbrig, Otto T. Evolution and Systematics. second printing. New York u.a: Macmillan, 1966.

MLA (9th ed.) Citation

Solbrig, Otto T. Evolution and Systematics. second printing. Macmillan, 1966.