Gaya APA

International economics : theory and policy / Paul R. Krugman ; Maurice Obstfeld. (1994). New York, NY: HarperCollins College Press, c.

Gaya MLA

International economics : theory and policy / Paul R. Krugman ; Maurice Obstfeld. 3rd ed.. New York, NY: HarperCollins College Press, c, 1994. Buku Wajib.