APA (7th ed.) Citation

Ormsby, W. L., Wright, L. H., & Bynum, J. M. (1942). The Butterfield overland mail. The Huntington Library.

Chicago Style (17th ed.) Citation

Ormsby, Waterman Lilly, Lyle Henry Wright, and Josephine M. Bynum. The Butterfield Overland Mail. San Marino, Calif.: The Huntington Library, 1942.

MLA (8th ed.) Citation

Ormsby, Waterman Lilly, et al. The Butterfield Overland Mail. The Huntington Library, 1942.

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