Colberg, M. R., & Christensen, J. P. (1981). Business economics: Principles and cases (6th ed.). জরপযধৎফ উ. ওৎরিহ.
Citazione stile Chigago Style (17a edizione)Colberg, Marshall R., e James P. Christensen. Business Economics: Principles and Cases. 6th ed. Homewood, Ill.: জরপযধৎফ উ. ওৎরিহ, 1981.
Citatione MLA (9a ed.)Colberg, Marshall R., e James P. Christensen. Business Economics: Principles and Cases. 6th ed. জরপযধৎফ উ. ওৎরিহ, 1981.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.