[1] Edwards Aquifer Authority. 2004. Draft Edwards Aquifer Habitat Conservation Plan and Draft Environmental impact Statement for Isuance of a Permit to Allow Incidental Take of 10 Species in South Central Texas. Ammended 9/21/04.
[2] U.S. Fish and Wildlife Service. 1996. San Marcos/Comal (Revised Recovery Plan. Albuquerque, New Mexico. pp93 +appendices.