Cita APA (7a ed.)

Schumaker, J. F. (2007). In search of happiness: Understanding an endangered state of mind. Praeger.

Cita Chicago Style (17a ed.)

Schumaker, John F. In Search of Happiness: Understanding an Endangered State of Mind. Westport [etc.]: Praeger, 2007.

Cita MLA (9a ed.)

Schumaker, John F. In Search of Happiness: Understanding an Endangered State of Mind. Praeger, 2007.