APA-Zitierstil (7. Ausg.)

Helliwell, J. F., Layard, R., & Sachs, J. (2013). World happiness report 2013. Sustainable Development Solutions Network.

Chicago-Zitierstil (17. Ausg.)

Helliwell, John F., Richard Layard, und Jeffrey Sachs. World Happiness Report 2013. New York, N. Y: Sustainable Development Solutions Network, 2013.

MLA-Zitierstil (9. Ausg.)

Helliwell, John F., et al. World Happiness Report 2013. Sustainable Development Solutions Network, 2013.