Gaya APA

Ng, Y., Ho, L, S. (2006). Happiness and public policy : theory, case studies and implications (Ed.1). New York: Palgrave Macmillan.

Gaya MLA

Ng, Yew-Kwang., Ho, Lok, Sang. "Happiness and public policy : theory, case studies and implications". Ed.1 New York: Palgrave Macmillan, 2006. Text.