Não informado. (2003). Journal of professional services marketing. Haworth Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Professional Services Marketing. New York: Haworth Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Professional Services Marketing. Haworth Press, 2003.
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