Cita APA (7th ed.)
Tyler, K. (1994). There's an angel on your shoulder: Angel encounters in everyday life (Berkley trade pbk. ed.). Berkley Books.
Cita Chicago (17th ed.)
Tyler, Kelsey. There's an Angel on Your Shoulder: Angel Encounters in Everyday Life. Berkley trade pbk. ed. New York: Berkley Books, 1994.
Cita MLA (9th ed.)
Tyler, Kelsey. There's an Angel on Your Shoulder: Angel Encounters in Everyday Life. Berkley trade pbk. ed. Berkley Books, 1994.
Atenció: Aquestes cites poden no estar 100% correctes.