HITCHINGS, B. (1975). Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHITCHINGS, Bradley. Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut, 1975.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHITCHINGS, Bradley. Marketing As A Cybernatic System Bradley Hitchings. Alexander Hamilton Institut, 1975.
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