Dix, K. (1988). What's a coal miner to do?: The mechanization of coal mining. University of Pittsburgh Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDix, Keith. What's a Coal Miner to Do?: The Mechanization of Coal Mining. Pittsburgh, Pa.: University of Pittsburgh Press, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDix, Keith. What's a Coal Miner to Do?: The Mechanization of Coal Mining. University of Pittsburgh Press, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.
