United States. Bureau of Reclamation. (1952). Farm unit base map, Columbia Basin Project - Washington. The Bureau.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Bureau of Reclamation. Farm Unit Base Map, Columbia Basin Project - Washington. Ephrata, Wash.: The Bureau, 1952.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited States. Bureau of Reclamation. Farm Unit Base Map, Columbia Basin Project - Washington. The Bureau, 1952.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.