United States. Soil Conservation Service, Pleasanton Plant Materials Center, & California. Division of Soil Conservation. (1964). Key to the future: Better plants. U.S. Dept. of Agriculture, Soil Conservation Service.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service, Pleasanton Plant Materials Center, and California. Division of Soil Conservation. Key to the Future: Better Plants. [Pleasanton, Calif.]: U.S. Dept. of Agriculture, Soil Conservation Service, 1964.
MLA (9th ed.) CitationUnited States. Soil Conservation Service, et al. Key to the Future: Better Plants. U.S. Dept. of Agriculture, Soil Conservation Service, 1964.
Warning: These citations may not always be 100% accurate.