Cita APA (7th ed.)

Hospers, J. (1972). Human conduct; problems of ethics (Shorter ed.). Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

Hospers, John. Human Conduct; Problems of Ethics. Shorter ed. New York: Harcourt Brace Jovanovich, 1972.

Cita MLA (9th ed.)

Hospers, John. Human Conduct; Problems of Ethics. Shorter ed. Harcourt Brace Jovanovich, 1972.