APA استشهاد

Holmes, R. L. (2003). Basic moral philosophy (3rd ed.). Wadsworth.

استشهاد بنمط شيكاغو

Holmes, Robert L. Basic Moral Philosophy. 3rd ed. Belmont: Wadsworth, 2003.

MLA استشهاد

Holmes, Robert L. Basic Moral Philosophy. 3rd ed. Wadsworth, 2003.