APA (7th ed.) Citation

Emmons, R. A. (2007). Thanks!: How the new science of gratitude can make you happier. Houghton Mifflin Co..

Chicago Style (17th ed.) Citation

Emmons, Robert A. Thanks!: How the New Science of Gratitude Can Make You Happier. Boston, Mass.: Houghton Mifflin Co., 2007.

MLA (8th ed.) Citation

Emmons, Robert A. Thanks!: How the New Science of Gratitude Can Make You Happier. Houghton Mifflin Co., 2007.

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