United States. Census Office. (1960). Original schedules returned by census enumerators for Montana territory, 1870, 1880: Covering statistics as follows: mortality, agricultural products, industrial products, social statistics. Historical Society of Montana Library.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUnited States. Census Office. Original Schedules Returned by Census Enumerators for Montana Territory, 1870, 1880: Covering Statistics as Follows: Mortality, Agricultural Products, Industrial Products, Social Statistics. Helena, Mont.: Historical Society of Montana Library, 1960.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিUnited States. Census Office. Original Schedules Returned by Census Enumerators for Montana Territory, 1870, 1880: Covering Statistics as Follows: Mortality, Agricultural Products, Industrial Products, Social Statistics. Historical Society of Montana Library, 1960.