Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

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