APA (7th ed.) Citation

Howard, L. O. (1899). Three insect enemies of shade trees. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Howard, L. O. Three Insect Enemies of Shade Trees. [Washington, D.C.]: U.S. Government Printing Office, 1899.

MLA (9th ed.) Citation

Howard, L. O. Three Insect Enemies of Shade Trees. U.S. Government Printing Office, 1899.