APA (7th ed.) Citation

Barker, R. A., & Ardis, A. F. (1996). Hydrogeologic framework of the Edwards-Trinity aquifer system, west-central Texas. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Barker, René A., and Ann F. Ardis. Hydrogeologic Framework of the Edwards-Trinity Aquifer System, West-central Texas. Washington: United States Government Printing Office, 1996.

MLA (9th ed.) Citation

Barker, René A., and Ann F. Ardis. Hydrogeologic Framework of the Edwards-Trinity Aquifer System, West-central Texas. United States Government Printing Office, 1996.