APA (7th ed.) Citation

United States. Bureau of Land Management. (1991). 1:100 000-scale metric planimetric map of Big Snowy Mountains, Montana, 1979: 30 x 60 minute series (planimetric) (BLM ed.--1990.). The Bureau ; BLM State Office.

Chicago Style (17th ed.) Citation

United States. Bureau of Land Management. 1:100 000-scale Metric Planimetric Map of Big Snowy Mountains, Montana, 1979: 30 X 60 Minute Series (planimetric). BLM ed.--1990. Reston, Va. : Billings, MT: The Bureau ; BLM State Office, 1991.

MLA (9th ed.) Citation

United States. Bureau of Land Management. 1:100 000-scale Metric Planimetric Map of Big Snowy Mountains, Montana, 1979: 30 X 60 Minute Series (planimetric). BLM ed.--1990. The Bureau ; BLM State Office, 1991.