Παραπομπή σε μορφή APA (7η εκδ.)

Blundell, M. W. (1989). Helping friends and harming enemies: A study in Sophocles and Greek ethics. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Blundell, Mary Whitlock. Helping Friends and Harming Enemies: A Study in Sophocles and Greek Ethics. Cambridge [England] New York: Cambridge University Press, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Blundell, Mary Whitlock. Helping Friends and Harming Enemies: A Study in Sophocles and Greek Ethics. Cambridge University Press, 1989.