Cita APA (7th ed.)

Brennan, A. (1995). The ethics of the environment. Dartmouth.

Cita Chicago (17th ed.)

Brennan, Andrew. The Ethics of the Environment. Aldershot, Hants, England ; Brookfield, Vt.: Dartmouth, 1995.

Cita MLA (9th ed.)

Brennan, Andrew. The Ethics of the Environment. Dartmouth, 1995.