APA (7th ed.) Citation

Ethridge, F. G., Berg, R. R., Bryant, W. R., Gates, C. E., & Smith, J. E. (1970). Quantitative petrographic criteria for recognition of environments of deposition.

Chicago Style (17th ed.) Citation

Ethridge, Frank Gulde, R. R. Berg, William R. Bryant, C. E. Gates, and Jud E. Smith. Quantitative Petrographic Criteria for Recognition of Environments of Deposition. [College Station, Tex.], 1970.

MLA (9th ed.) Citation

Ethridge, Frank Gulde, et al. Quantitative Petrographic Criteria for Recognition of Environments of Deposition. 1970.