Cita APA (7th ed.)

Hospers, J. (1972). Human conduct: Problems of ethics. Harcourt Brace Jovanovich.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

Hospers, John. Human Conduct: Problems of Ethics. Harcourt Brace Jovanovich, 1972.