Wells, Dan M., Ernest T. Smerdon, and Earnest F. Gloyna(Texas A&M University, Water Resources Institute; The University of Texas, Center for Water Resources; and Texas Technological College, Water Resources Center, 1966)
McKay, Melanie, Judity Nides, Larry Atkinson, Alexis Lugo-Fernandez and Debra Vigil(U.S. Department of the Interior, Minerals Management Service, Gulf of Mexico OCS Region, 2001)