APA (7th ed.) Citation

Frémont, J. C., Torrey, J., & Hall, J. (1966). Report of the exploring expedition to the Rocky mountains. University Microfilms.

Chicago Style (17th ed.) Citation

Frémont, John Charles, John Torrey, and James Hall. Report of the Exploring Expedition to the Rocky Mountains. Ann Arbor [Mich.]: University Microfilms, 1966.

MLA (9th ed.) Citation

Frémont, John Charles, et al. Report of the Exploring Expedition to the Rocky Mountains. University Microfilms, 1966.