APA (7th ed.) Citation

Smith, C. I. (1970). Lower Cretaceous stratigraphy, northern Coahuila, Mexico. Bureau of Economic Geology, University of Texas.

Chicago Style (17th ed.) Citation

Smith, Charles Isaac. Lower Cretaceous Stratigraphy, Northern Coahuila, Mexico. Austin: Bureau of Economic Geology, University of Texas, 1970.

MLA (9th ed.) Citation

Smith, Charles Isaac. Lower Cretaceous Stratigraphy, Northern Coahuila, Mexico. Bureau of Economic Geology, University of Texas, 1970.