Palmer, Lawrence J. & Rouse, Charles H. Study of the Alaska Tundra with Reference to its Reactions to Reindeer and other Grazing, report, 1945; (https://digital.library.unt.edu/ark:/67531/metadc100536/m1/43/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .