Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.