APA (7th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. (1920). U.S. grades for sweet potatoes, recommended by U.S. Department of Agriculture. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. U.S. Grades for Sweet Potatoes, Recommended by U.S. Department of Agriculture. Washington: U.S. GPO, 1920.

MLA (9th ed.) Citation

United States. Department of Agriculture. Office of the Secretary. U.S. Grades for Sweet Potatoes, Recommended by U.S. Department of Agriculture. U.S. GPO, 1920.