APA (7th ed.) Citation

Dungan, G. H., & Bolin, O. E. (1950). Judging crop quality. [Interstate].

Chicago Style (17th ed.) Citation

Dungan, George Harlan, and Oren E. Bolin. Judging Crop Quality. [Danville, Ill.]: [Interstate], 1950.

MLA (9th ed.) Citation

Dungan, George Harlan, and Oren E. Bolin. Judging Crop Quality. [Interstate], 1950.