Colberg, M. R., & Christensen, J. P. (1981). Business economics: Principles and cases (6th ed.). জরপযধৎফ উ. ওৎরিহ.
Chicago Style (17th ed.) CitationColberg, Marshall R., and James P. Christensen. Business Economics: Principles and Cases. 6th ed. Homewood, Ill.: জরপযধৎফ উ. ওৎরিহ, 1981.
MLA (9th ed.) CitationColberg, Marshall R., and James P. Christensen. Business Economics: Principles and Cases. 6th ed. জরপযধৎফ উ. ওৎরিহ, 1981.
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