APA (7th ed.) Citation

Freeman, M. D., Hannum, S. L., & Prewitt, E. R. (1991). A history of fortifications at Fort San Jacinto, Galveston Island, Texas. Prewitt and Associates.

Chicago Style (17th ed.) Citation

Freeman, Martha Doty, Sandra L. Hannum, and Elton R. Prewitt. A History of Fortifications at Fort San Jacinto, Galveston Island, Texas. Austin: Prewitt and Associates, 1991.

MLA (9th ed.) Citation

Freeman, Martha Doty, et al. A History of Fortifications at Fort San Jacinto, Galveston Island, Texas. Prewitt and Associates, 1991.