Gaya APA

Mankiw, N, G. (2012). Principles of macroeconomics, 6th edition (ED-6). Canada: Canada : Cengage, 2012.

Gaya MLA

Mankiw, N., Gregory. "Principles of macroeconomics, 6th edition". ED-6 Canada: Canada : Cengage, 2012, 2012. Text.