APA Style

Rubin, G. (2011). The Happiness Project : Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun . USA: HarperCollins.

MLA Style

Rubin, Gretchen. "The Happiness Project : Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun". USA: HarperCollins, 2011. Printed Book.