Cita APA (7th ed.)

Levenstein, A. (1965). Use your head: The new science of personal problem-solving. Macmillan.

Cita Chicago (17th ed.)

Levenstein, Aaron. Use Your Head: The New Science of Personal Problem-solving. New York: Macmillan, 1965.

Cita MLA (9th ed.)

Levenstein, Aaron. Use Your Head: The New Science of Personal Problem-solving. Macmillan, 1965.