Cita APA (7a ed.)

(1949). Pursuit of happiness: A primer for modern living. Spero Foundation.

Cita Chicago Style (17a ed.)

Pursuit of Happiness: A Primer for Modern Living. New York: Spero Foundation, 1949.

Cita MLA (8a ed.)

Pursuit of Happiness: A Primer for Modern Living. Spero Foundation, 1949.