CRAVENS. (1980). Marketing Decision Making Concepts And Strategy Cravens Dkk. Richard D. Irwin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCRAVENS. Marketing Decision Making Concepts And Strategy Cravens Dkk. Richard D. Irwin, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCRAVENS. Marketing Decision Making Concepts And Strategy Cravens Dkk. Richard D. Irwin, 1980.
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