Dyfyniad APA

Feldman, F. (2010). Wath is this thing called happiness? (Primera edición.). Oxford University Press.

Dyfyniad Arddull Chicago

Feldman, Fred. Wath Is This Thing Called Happiness? Primera edición. New York: Oxford University Press, 2010.

Dyfyniad MLA

Feldman, Fred. Wath Is This Thing Called Happiness? Primera edición. Oxford University Press, 2010.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.