APA

Sher G., . (1987). Moral Philosophy. San Diego u.a: Harcourt Brace Jovanovich.

Chicago

Sher George, . 1987. Moral Philosophy. San Diego u.a: Harcourt Brace Jovanovich.

Harvard

Sher G., . (1987). Moral Philosophy. San Diego u.a: Harcourt Brace Jovanovich.

MLA

Sher George, . Moral Philosophy. San Diego u.a: Harcourt Brace Jovanovich. 1987.