Walstad, W. B. (2010). Study guide for use with Brue, McConnell, and Fynn Essentials of economics. New York: McGraw-Hill.
Παραπομπή Chicago StyleWalstad, William B. Study Guide for Use With Brue, McConnell, and Fynn Essentials of Economics. New York: McGraw-Hill, 2010.
Παραπομπή MLAWalstad, William B. Study Guide for Use With Brue, McConnell, and Fynn Essentials of Economics. New York: McGraw-Hill, 2010.
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