Παραπομπή APA

(1968). Michigan statistical abstract (7th ed.). East Lansing, MI: Michigan State University, Βureau of Business and Economic Research.

Παραπομπή Chicago Style

Michigan Statistical Abstract. 7th ed. East Lansing, MI: Michigan State University, Βureau of Business and Economic Research, 1968.

Παραπομπή MLA

Michigan Statistical Abstract. 7th ed. East Lansing, MI: Michigan State University, Βureau of Business and Economic Research, 1968.

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