APA引文

NORDHEAUS SAMUELSON. (2009). ECONOMICS (18.).

Chicago Style (17th ed.) Citation

NORDHEAUS SAMUELSON. ECONOMICS. 18. NEW DELHI, 2009.

MLA引文

NORDHEAUS SAMUELSON. ECONOMICS. 18. 2009.

警告：這些引文格式不一定是100％准確.