Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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