APA (7th ed.) Citation

Hopkins, J. A., & Heady, E. O. (1949). Farm records (3rd ed.). Iowa State College Press.

Chicago Style (17th ed.) Citation

Hopkins, John A., and Earl O. Heady. Farm Records. 3rd ed. Ames, Iowa: Iowa State College Press, 1949.

MLA (8th ed.) Citation

Hopkins, John A., and Earl O. Heady. Farm Records. 3rd ed. Iowa State College Press, 1949.