Knight, J., & Gunatilaka, R. (2009). Is Happiness Infectious? Department of Economics (University of Oxford).
芝加哥风格引文Knight, J., 与 R. Gunatilaka. Is Happiness Infectious? Department of Economics (University of Oxford), 2009.
MLA引文Knight, J., 与 R. Gunatilaka. Is Happiness Infectious? Department of Economics (University of Oxford), 2009.
警告：这些引文格式不一定是100％准确.