APA (7th ed.) Citation

Geological Survey (U.S.), Denver Public Library. Western History/Genealogy Department, & Scott, G. R. (2001). Historic trail map of the Trinidad 1⁰ x 2⁰ quadrangle, southern Colorado. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Denver Public Library. Western History/Genealogy Department, and Glenn R. Scott. Historic Trail Map of the Trinidad 1⁰ X 2⁰ Quadrangle, Southern Colorado. [Reston, Va.]: The Survey, 2001.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Historic Trail Map of the Trinidad 1⁰ X 2⁰ Quadrangle, Southern Colorado. The Survey, 2001.