APA (7th ed.) Citation

Geological Survey (U.S.). (1980). 1:100 000-scale metric topographic map of Broadus, Montana-- Wyoming, 1980: 30 x 60 minute series (topographic). The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). 1:100 000-scale Metric Topographic Map of Broadus, Montana-- Wyoming, 1980: 30 X 60 Minute Series (topographic). Reston, Va.: The Survey, 1980.

MLA (9th ed.) Citation

Geological Survey (U.S.). 1:100 000-scale Metric Topographic Map of Broadus, Montana-- Wyoming, 1980: 30 X 60 Minute Series (topographic). The Survey, 1980.