Douglas, E. J. (1987). Managerial economics: Analysis and strategy (3rd ed.). Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDouglas, Evan J. Managerial Economics: Analysis and Strategy. 3rd ed. Englewood Cliffs, N.J.: Prentice-Hall, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDouglas, Evan J. Managerial Economics: Analysis and Strategy. 3rd ed. Prentice-Hall, 1987.
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