Tracy, B. (2014). Marketing: The brian tracy success library (Unabridged.). Your Coach Digital.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTracy, Brian. Marketing: The Brian Tracy Success Library. Unabridged. Rego Park: Your Coach Digital, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTracy, Brian. Marketing: The Brian Tracy Success Library. Unabridged. Your Coach Digital, 2014.
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