Hobbs, S. W., & Hays, W. H. (1990). Ordovician and older rocks of the Bayhorse Area, Custer County, Idaho: Detailed descriptions and columnar sections of the major stratigraphic units that comprise Ordovician and older strata of unknown age in a structurally complex area. United States Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Hobbs, Samuel Warren, und William H. Hays. Ordovician and Older Rocks of the Bayhorse Area, Custer County, Idaho: Detailed Descriptions and Columnar Sections of the Major Stratigraphic Units That Comprise Ordovician and Older Strata of Unknown Age in a Structurally Complex Area. Washington: United States Gov. Print. Off, 1990.
MLA-Zitierstil (9. Ausg.)Hobbs, Samuel Warren, und William H. Hays. Ordovician and Older Rocks of the Bayhorse Area, Custer County, Idaho: Detailed Descriptions and Columnar Sections of the Major Stratigraphic Units That Comprise Ordovician and Older Strata of Unknown Age in a Structurally Complex Area. United States Gov. Print. Off, 1990.