APA (7th ed.) Citation

Gibbs, H. L., & Evans, L. G. (1950). Improvements in methods for preparing thin sections of rock. United States Department of the Interior, Bureau of Mines.

Chicago Style (17th ed.) Citation

Gibbs, Harold L., and LaMar G. Evans. Improvements in Methods for Preparing Thin Sections of Rock. [Washington, D.C.]: United States Department of the Interior, Bureau of Mines, 1950.

MLA (9th ed.) Citation

Gibbs, Harold L., and LaMar G. Evans. Improvements in Methods for Preparing Thin Sections of Rock. United States Department of the Interior, Bureau of Mines, 1950.