Cita APA (7a ed.)

Knight, J., & Gunatilaka, R. (2009). Is Happiness Infectious? Department of Economics (University of Oxford).

Cita Chicago Style (17a ed.)

Knight, J., y R. Gunatilaka. Is Happiness Infectious? Department of Economics (University of Oxford), 2009.

Cita MLA (9a ed.)

Knight, J., y R. Gunatilaka. Is Happiness Infectious? Department of Economics (University of Oxford), 2009.