Cita APA (7a ed.)

Gilbert, D. T. (2007). Stumbling on happiness. Harper Perennial.

Cita Chicago Style (17a ed.)

Gilbert, Daniel Todd. Stumbling on Happiness. London [etc.]: Harper Perennial, 2007.

Cita MLA (9a ed.)

Gilbert, Daniel Todd. Stumbling on Happiness. Harper Perennial, 2007.