Kaufman, R. A. (1988). Identifying and solving problems: A management guide (4th ed.). Social Impacts Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKaufman, Roger A. Identifying and Solving Problems: A Management Guide. 4th ed. [Sydney]: Social Impacts Publications, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKaufman, Roger A. Identifying and Solving Problems: A Management Guide. 4th ed. Social Impacts Publications, 1988.
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