Lua APA (7ú heag.)

Rachels, J. (1993). The elements of moral philosophy (2nd ed.). McGraw-hill.

Lua i Stíl Chicago (17ú heag.)

Rachels, James. The Elements of Moral Philosophy. 2nd ed. New York: McGraw-hill, 1993.

Lua MLA (9ú heag.)

Rachels, James. The Elements of Moral Philosophy. 2nd ed. McGraw-hill, 1993.

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