APA (7e ed.) Bronvermelding
Nettle, D. (2005). Happiness: The science behind your smile. Oxford University Press.
Chicago (17e ed.) Bronvermelding
Nettle, Daniel. Happiness: The Science Behind Your Smile. Oxford, UK ; New York, N.Y.: Oxford University Press, 2005.
MLA (9e ed.) Bronvermelding
Nettle, Daniel. Happiness: The Science Behind Your Smile. Oxford University Press, 2005.
Let op: Deze citaties zijn niet altijd 100% accuraat.