APA (7th ed.) Citation

Geological Survey (U.S.). (1981). 1: 100 000-scale metric topographic map of Douglas, Wyoming. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). 1: 100 000-scale Metric Topographic Map of Douglas, Wyoming. Reston, Va.: The Survey, 1981.

MLA (9th ed.) Citation

Geological Survey (U.S.). 1: 100 000-scale Metric Topographic Map of Douglas, Wyoming. The Survey, 1981.

Warning: These citations may not always be 100% accurate.