Hansen, R., & Elson, F. A beginner's geology of the Spokane area. Spokane Area Community Resources Workshop.
Cita Chicago Style (17a ed.)Hansen, Rosella, y Frances Elson. A Beginner's Geology of the Spokane Area. Spokane: Spokane Area Community Resources Workshop.
Cita MLA (8a ed.)Hansen, Rosella, y Frances Elson. A Beginner's Geology of the Spokane Area. Spokane Area Community Resources Workshop.
Precaución: Estas citas no son 100% exactas.