Johnson, A. W., & Sallberg, J. R. (1960). Factors that influence field compaction of soils: Compaction characteristics of field equipment. National Academy of Science - National Research Council.
Chicago Style (17th ed.) CitationJohnson, Alfred Walton, and John R. Sallberg. Factors That Influence Field Compaction of Soils: Compaction Characteristics of Field Equipment. Washington, D.C: National Academy of Science - National Research Council, 1960.
MLA (9th ed.) CitationJohnson, Alfred Walton, and John R. Sallberg. Factors That Influence Field Compaction of Soils: Compaction Characteristics of Field Equipment. National Academy of Science - National Research Council, 1960.
Warning: These citations may not always be 100% accurate.