APA (7th ed.) Citation

Heiland, C. A., Henderson, C. W., & Malkovsky, J. A. (1929). Geophysical investigations at Caribou, Colo. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Heiland, C. A., Charles W. Henderson, and Jaroslav A. Malkovsky. Geophysical Investigations at Caribou, Colo. [Washington?]: U.S. Government Printing Office, 1929.

MLA (9th ed.) Citation

Heiland, C. A., et al. Geophysical Investigations at Caribou, Colo. U.S. Government Printing Office, 1929.