Tysdal, R. G., & Tysdal, R. G. (2000). Revision of Middle Proterozoic Yellowjacket Formation, Central Idaho, and revision of Cretaceous Slim Sam Formation, Elkhorn Mountains area, Montana. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey.
Chicago Style CitationTysdal, Russell G., and Russell G. Tysdal. Revision of Middle Proterozoic Yellowjacket Formation, Central Idaho, and Revision of Cretaceous Slim Sam Formation, Elkhorn Mountains Area, Montana. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2000.
MLA CitationTysdal, Russell G., and Russell G. Tysdal. Revision of Middle Proterozoic Yellowjacket Formation, Central Idaho, and Revision of Cretaceous Slim Sam Formation, Elkhorn Mountains Area, Montana. Denver, Colo.: U.S. Departamento of the Interior, Geological Survey, 2000.