APA (7th ed.) Citation

Kepner, R. A., Barger, E. L., & Bainer, R. (1972). Principles of farm machinery (2nd ed.). Avi Pub. Co..

Chicago Style (17th ed.) Citation

Kepner, R. A., E. L. Barger, and Roy Bainer. Principles of Farm Machinery. 2nd ed. Westport, Conn.: Avi Pub. Co., 1972.

MLA (8th ed.) Citation

Kepner, R. A., et al. Principles of Farm Machinery. 2nd ed. Avi Pub. Co., 1972.