Yohe, G. W., & Samuelson, P. A. (1992). Study guide to accompany Samuelson-Nordhaus: Microeconomics (14th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Yohe, Gary Wynn, i Paul Anthony Samuelson. Study Guide to Accompany Samuelson-Nordhaus: Microeconomics. 14th ed. New York: McGraw-Hill, 1992.
Cita MLA (9th ed.)Yohe, Gary Wynn, i Paul Anthony Samuelson. Study Guide to Accompany Samuelson-Nordhaus: Microeconomics. 14th ed. McGraw-Hill, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.