Great Northern Railway Company (U.S.), Schaeffer, C. E., & Reiss, W. (1958). Blackfoot Indians of Glacier National Park. Great Northern Railway Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.), Claude E. Schaeffer, और Winold Reiss. Blackfoot Indians of Glacier National Park. St. Paul, Minn.: Great Northern Railway Co., 1958.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.), et al. Blackfoot Indians of Glacier National Park. Great Northern Railway Co., 1958.
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