Blackfeet Tribal Business Council & Environmental Concern, inc. (1972). Blackfeet comprehensive plan. Blackfeet Planning, Blackfeet Indian Reservation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBlackfeet Tribal Business Council और inc Environmental Concern. Blackfeet Comprehensive Plan. Browning, Mont.: Blackfeet Planning, Blackfeet Indian Reservation, 1972.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBlackfeet Tribal Business Council और inc Environmental Concern. Blackfeet Comprehensive Plan. Blackfeet Planning, Blackfeet Indian Reservation, 1972.
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