Cita APA (7a ed.)

Brewer, R. (1979). Principles of ecology. Saunders.

Cita Chicago Style (17a ed.)

Brewer, Richard. Principles of Ecology. Philadelphia: Saunders, 1979.

Cita MLA (8a ed.)

Brewer, Richard. Principles of Ecology. Saunders, 1979.