APA (7th ed.) Zitazioa
Gordon, S. D., & Dawson, G. G. (1987). Instructor's guide with test items for Introductory economics (6th ed.). D.C. Heath.
Chicago Style (17th ed.) Zitazioa
Gordon, Sanford D., eta George Glenn Dawson. Instructor's Guide with Test Items for Introductory Economics. 6th ed. Lexington, Mass.: D.C. Heath, 1987.
MLA (9th ed.) Zitazioa
Gordon, Sanford D., eta George Glenn Dawson. Instructor's Guide with Test Items for Introductory Economics. 6th ed. D.C. Heath, 1987.
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