APA (7th ed.) Citation

John Grogan. (2011). "Bad Dog, Marley!". HarperCollins.

Chicago Style (17th ed.) Citation

John Grogan. "Bad Dog, Marley!". HarperCollins, 2011.

MLA (9th ed.) Citation

John Grogan. "Bad Dog, Marley!". HarperCollins, 2011.

Warning: These citations may not always be 100% accurate.