APA (7e ed.) Bronvermelding

Kaplan, J. (2015). The gratitude diaries: How a year looking on the bright side can transform your life. Dutton.

Chicago (17e ed.) Bronvermelding

Kaplan, Janice. The Gratitude Diaries: How a Year Looking on the Bright Side Can Transform Your Life. New York: Dutton, 2015.

MLA (9e ed.) Bronvermelding

Kaplan, Janice. The Gratitude Diaries: How a Year Looking on the Bright Side Can Transform Your Life. Dutton, 2015.