APA (7th ed.) Citation

Rubin, G. (2009). The Happiness Project (2nd.). Pearson.

Chicago Style (17th ed.) Citation

Rubin, Gretchen. The Happiness Project. 2nd. New Delhi: Pearson, 2009.

MLA (9th ed.) Citation

Rubin, Gretchen. The Happiness Project. 2nd. Pearson, 2009.