Hospers, J. (1972). Human conduct; problems of ethics (Shorter ed.). Harcourt Brace Jovanovich.
芝加哥风格引文Hospers, John. Human Conduct; Problems of Ethics. Shorter ed. New York: Harcourt Brace Jovanovich, 1972.
MLA引文Hospers, John. Human Conduct; Problems of Ethics. Shorter ed. Harcourt Brace Jovanovich, 1972.
警告：这些引文格式不一定是100％准确.