Zapffe, C. (1949). Iron bearing deposits in Washington, Oregon, and Idaho: A review.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZapffe, Carl. Iron Bearing Deposits in Washington, Oregon, and Idaho: A Review. Portland, Or, 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रZapffe, Carl. Iron Bearing Deposits in Washington, Oregon, and Idaho: A Review. 1949.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.