Essig, E. O. (1929). Insects of western North America: A manual and textbook for students in colleges and universities and a handbook for county, state and federal entomologists and agriculturists as well as for foresters, farmers, gardeners, travelers, and lovers of nature. The Macmillan company.
Chicago Style (17th ed.) CitationEssig, E. O. Insects of Western North America: A Manual and Textbook for Students in Colleges and Universities and a Handbook for County, State and Federal Entomologists and Agriculturists as Well as for Foresters, Farmers, Gardeners, Travelers, and Lovers of Nature. New York: The Macmillan company, 1929.
MLA (9th ed.) CitationEssig, E. O. Insects of Western North America: A Manual and Textbook for Students in Colleges and Universities and a Handbook for County, State and Federal Entomologists and Agriculturists as Well as for Foresters, Farmers, Gardeners, Travelers, and Lovers of Nature. The Macmillan company, 1929.