APA (7th ed.) Citation

Ewing, T. E., & Barker, D. S. (1986). Late Cretaceous igneous rocks of the Uvalde area southwest Texas. South Texas Geological Society.

Chicago Style (17th ed.) Citation

Ewing, Thomas E., and D. S. Barker. Late Cretaceous Igneous Rocks of the Uvalde Area Southwest Texas. [Texas?]: South Texas Geological Society, 1986.

MLA (9th ed.) Citation

Ewing, Thomas E., and D. S. Barker. Late Cretaceous Igneous Rocks of the Uvalde Area Southwest Texas. South Texas Geological Society, 1986.