(1998). Market fact book. Northwest Business Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarket Fact Book. Spokane, Wash.: Northwest Business Press, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarket Fact Book. Northwest Business Press, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.