Willingham, C. (1950). End as a man: By Calder Willingham. Avon.
Chicago-Zitierstil (17. Ausg.)Willingham, Calder. End as a Man: By Calder Willingham. New York: Avon, 1950.
MLA-Zitierstil (8. Ausg.)Willingham, Calder. End as a Man: By Calder Willingham. Avon, 1950.
警告：這些引文格式不一定是100％准確.