APA (7e ed.) Bronvermelding

Layard, R., Nickell, S., & Mayraz, G. (2008). The Marginal Utility of Income.

Chicago (17e ed.) Bronvermelding

Layard, R., S. Nickell, en G. Mayraz. The Marginal Utility of Income. 2008.

MLA (9e ed.) Bronvermelding

Layard, R., et al. The Marginal Utility of Income. 2008.