APA (7th ed.) Citation

Weigel, C. A., & Middleton, W. (1926). Insect enemies of the flower garden. U.S. Dept. of Agriculture.

Chicago Style (17th ed.) Citation

Weigel, C. A., and William Middleton. Insect Enemies of the Flower Garden. Washington, D.C: U.S. Dept. of Agriculture, 1926.

MLA (9th ed.) Citation

Weigel, C. A., and William Middleton. Insect Enemies of the Flower Garden. U.S. Dept. of Agriculture, 1926.