Bierstedt, R., & Samuelson, P. A. (1964). Modern Social Science. New York: McGraw-Hill Book Co..
Trích dẫn kiểu ChicagoBierstedt, Robert., và Paul A. Samuelson. Modern Social Science. New York: McGraw-Hill Book Co., 1964.
Deismireacht MLABierstedt, Robert., và Paul A. Samuelson. Modern Social Science. New York: McGraw-Hill Book Co., 1964.
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