Hawkins, P. H. (1924). The trees and shrubs of Yellowstone national park: A scientific and popular description of all the trees and shrubs with special reference to their economic use and their relations to wild life. George Banta publishing company.
Chicago Style (17th ed.) CitationHawkins, Pliny Haine. The Trees and Shrubs of Yellowstone National Park: A Scientific and Popular Description of All the Trees and Shrubs with Special Reference to Their Economic Use and Their Relations to Wild Life. Menasha, Wis.: George Banta publishing company, 1924.
MLA (8th ed.) CitationHawkins, Pliny Haine. The Trees and Shrubs of Yellowstone National Park: A Scientific and Popular Description of All the Trees and Shrubs with Special Reference to Their Economic Use and Their Relations to Wild Life. George Banta publishing company, 1924.