Tohutoro APA (7th ed.)
Koch, J. V. (1980). Industrial organization and prices (2d ed.). Prentice-Hall.
Tohutoru Kātū Chicago (17th ed.)
Koch, James V. Industrial Organization and Prices. 2d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1980.
Tohutoro MLA (9th ed.)
Koch, James V. Industrial Organization and Prices. 2d ed. Prentice-Hall, 1980.
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