APA (7th ed.) Citation

Hopkins, A. D. (1909). Practical information on scolytid beetles of North American forests: I, Barkbeetles of genus Dendroctonus. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Hopkins, A. D. Practical Information on Scolytid Beetles of North American Forests: I, Barkbeetles of Genus Dendroctonus. [Washington, D.C.]: U.S. Government Printing Office, 1909.

MLA (9th ed.) Citation

Hopkins, A. D. Practical Information on Scolytid Beetles of North American Forests: I, Barkbeetles of Genus Dendroctonus. U.S. Government Printing Office, 1909.