Não informado. (1965). Journal of Purchasing. National Association of Purchasing Agents.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Purchasing. New York: National Association of Purchasing Agents, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Journal of Purchasing. National Association of Purchasing Agents, 1965.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.