APA-Zitierstil (7. Ausg.)

Layard, P. R. G. (2011). Happiness: Lessons from a new science (2., rev. and updated ed.). Penguin Books.

Chicago-Zitierstil (17. Ausg.)

Layard, Peter R. G. Happiness: Lessons from a New Science. 2., rev. and updated ed. London [u.a.]: Penguin Books, 2011.

MLA-Zitierstil (9. Ausg.)

Layard, Peter R. G. Happiness: Lessons from a New Science. 2., rev. and updated ed. Penguin Books, 2011.