APA (7th ed.) Citation

Johnson, O., & Winter, W. H. (1966). Route across the rocky mountains. University Microfilms.

Chicago Style (17th ed.) Citation

Johnson, Overton, and William H. Winter. Route Across the Rocky Mountains. Ann Arbor, Mich.: University Microfilms, 1966.

MLA (9th ed.) Citation

Johnson, Overton, and William H. Winter. Route Across the Rocky Mountains. University Microfilms, 1966.