APA (7th ed.) Citation

United States. Army. Corps of Topographical Engineers., Engelmann, H., & Bryan, F. T. (1857). Exploration from Fort Riley to Bridger's Pass. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Corps of Topographical Engineers., H. Engelmann, and F. T. Bryan. Exploration From Fort Riley to Bridger's Pass. Washington: [publisher not identified], 1857.

MLA (8th ed.) Citation

United States. Army. Corps of Topographical Engineers., et al. Exploration From Fort Riley to Bridger's Pass. [publisher not identified], 1857.