Shaw, E. J. (1968). Western fertilizer handbook (Fourth edition, Second printing.). California: Soil Improvement Committee, California Fertilizer Association - The Pacific Northwest Plant Food Association.
Chicago Style CitationShaw, Earle J. Western Fertilizer Handbook. Fourth edition, Second printing. California: Soil Improvement Committee, California Fertilizer Association - The Pacific Northwest Plant Food Association, 1968.
MLA CitationShaw, Earle J. Western Fertilizer Handbook. Fourth edition, Second printing. California: Soil Improvement Committee, California Fertilizer Association - The Pacific Northwest Plant Food Association, 1968.
Warning: These citations may not always be 100% accurate.