APA (7th ed.) Citation

Rosen, R. (1967). Optimality principles in biology. Butterworths.

Chicago Style (17th ed.) Citation

Rosen, Robert. Optimality Principles in Biology. London: Butterworths, 1967.

MLA (9th ed.) Citation

Rosen, Robert. Optimality Principles in Biology. Butterworths, 1967.