Beck, M. N. (2003). The joy diet: 10 daily practices for a happier life. Crown Publishers.
Cita Chicago Style (17a ed.)Beck, Martha Nibley. The Joy Diet: 10 Daily Practices for a Happier Life. New York: Crown Publishers, 2003.
Cita MLA (8a ed.)Beck, Martha Nibley. The Joy Diet: 10 Daily Practices for a Happier Life. Crown Publishers, 2003.
Precaución: Estas citas no son 100% exactas.