APA (7th ed.) Citation

United States. Congress. House, United States. Department of the Interior, Geological Survey (U.S.), Grout, F. F., & Soper, E. K. (1918). Clays and shales of Minnesota, by Frank F. Grout, with contributions by E.K. Soper. [U.S. Geological Survey Bulletin 678.].

Chicago Style (17th ed.) Citation

United States. Congress. House, United States. Department of the Interior, Geological Survey (U.S.), Frank F. Grout, and Edgar Kirke Soper. Clays and Shales of Minnesota, by Frank F. Grout, with Contributions by E.K. Soper. [U.S. Geological Survey Bulletin 678.]. Washington, DC, 1918.

MLA (8th ed.) Citation

United States. Congress. House, et al. Clays and Shales of Minnesota, by Frank F. Grout, with Contributions by E.K. Soper. [U.S. Geological Survey Bulletin 678.]. 1918.