Παραπομπή σε μορφή APA (7η εκδ.)

Rolston, H. (1988). Environmental ethics: Duties to and values in the natural world. Temple University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rolston, Holmes. Environmental Ethics: Duties to and Values in the Natural World. Philadelphia: Temple University Press, 1988.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rolston, Holmes. Environmental Ethics: Duties to and Values in the Natural World. Temple University Press, 1988.