Gail, W. W. (1919). Yellowstone County, Montana, in the world war, 1917-1918-1919. War Book Pub. Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGail, William W. Yellowstone County, Montana, in the World War, 1917-1918-1919. [Billings, Mont.: War Book Pub. Co., 1919.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGail, William W. Yellowstone County, Montana, in the World War, 1917-1918-1919. War Book Pub. Co., 1919.
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