APA (7th ed.) Citation

Little, E. L. (1979). Checklist of United States trees (native and naturalized). US Dep. of Agriculture.

Chicago Style (17th ed.) Citation

Little, Elbert Luther. Checklist of United States Trees (native and Naturalized). Washington, DC: US Dep. of Agriculture, 1979.

MLA (9th ed.) Citation

Little, Elbert Luther. Checklist of United States Trees (native and Naturalized). US Dep. of Agriculture, 1979.