Combs, W. B., & Jacobs, A. W. (1955). Outlines for 4-H club grain grading demonstrations. U.S. Dept. of Agriculture.
Chicago Style (17th ed.) CitationCombs, Willis B., and A. W. Jacobs. Outlines for 4-H Club Grain Grading Demonstrations. Washington, D.C.: U.S. Dept. of Agriculture, 1955.
MLA (9th ed.) CitationCombs, Willis B., and A. W. Jacobs. Outlines for 4-H Club Grain Grading Demonstrations. U.S. Dept. of Agriculture, 1955.
Warning: These citations may not always be 100% accurate.