Stoker, R. C.; Kunze, J. F.; Nelson, L. B. & Goldman, D. The Boise, Idaho Geothermal Reservoir, article, December 14, 1977; (https://digital.library.unt.edu/ark:/67531/metadc874945/m1/1/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .