APA ציטוט

Layard, R. (2005). Happiness: Lessons from a new science. Penguin Press.

Chicago Style (17th ed.) Citation

Layard, Richard. Happiness: Lessons from a New Science. New York: Penguin Press, 2005.

ציטוט MLA

Layard, Richard. Happiness: Lessons from a New Science. Penguin Press, 2005.