APA (7e ed.) Bronvermelding
Hefferon, K., & Boniwell, I. (2011). Positive psychology: Theory, research and applications. Open University Press/McGraw-Hill.
Chicago (17e ed.) Bronvermelding
Hefferon, Kate, en Ilona Boniwell. Positive Psychology: Theory, Research and Applications. Maidenhead, Berkshire ; New York: Open University Press/McGraw-Hill, 2011.
MLA (9e ed.) Bronvermelding
Hefferon, Kate, en Ilona Boniwell. Positive Psychology: Theory, Research and Applications. Open University Press/McGraw-Hill, 2011.
Let op: Deze citaties zijn niet altijd 100% accuraat.