APA (7th ed.) Citation

Geological Survey (U.S.), Denver Public Library. Western History/Genealogy Department, Colorado Railroad Museum, & Scott, G. R. (2004). Historic trail map of the Leadville 1⁰ x 2⁰ quadrangle, central Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Denver Public Library. Western History/Genealogy Department, Colorado Railroad Museum, and Glenn R. Scott. Historic Trail Map of the Leadville 1⁰ X 2⁰ Quadrangle, Central Colorado. [Reston, Va.]: U.S. Geological Survey, 2004.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Historic Trail Map of the Leadville 1⁰ X 2⁰ Quadrangle, Central Colorado. U.S. Geological Survey, 2004.