APA (7th ed.) Citation

Hospers, J. (1961). Human conduct: An introduction to the problems of ethics. Harcourt Brace & World.

Chicago Style (17th ed.) Citation

Hospers, John. Human Conduct: An Introduction to the Problems of Ethics. New York: Harcourt Brace & World, 1961.

MLA (9th ed.) Citation

Hospers, John. Human Conduct: An Introduction to the Problems of Ethics. Harcourt Brace & World, 1961.