APA引文
Samuelson, P. A., & Nordhaus, W. D. (1989). Economics (13th ed.). McGraw-Hill Book.
Chicago Style (17th ed.) Citation
Samuelson, Paul A., and William D. Nordhaus. Economics. 13th ed. New York: McGraw-Hill Book, 1989.
MLA引文
Samuelson, Paul A., and William D. Nordhaus. Economics. 13th ed. McGraw-Hill Book, 1989.
警告：這些引文格式不一定是100％准確.