1990 Directory of leading chain stores in the United States. Chain Store Business Guide].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र1990 Directory of Leading Chain Stores in the United States. [New York: Chain Store Business Guide].
एमएलए (9वां संस्करण) प्रशस्ति पत्र1990 Directory of Leading Chain Stores in the United States. Chain Store Business Guide].
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