Jackson, W. L. (1962). Guide to grading defects in ponderosa and sugar pine logs. Pacific Southwest Forest and Range Experiment Station : U.S. Department of Agriculture, Forest Service.
Chicago Style (17th ed.) CitationJackson, Willard L. Guide to Grading Defects in Ponderosa and Sugar Pine Logs. Berkeley, Calif.: Pacific Southwest Forest and Range Experiment Station : U.S. Department of Agriculture, Forest Service, 1962.
MLA (8th ed.) CitationJackson, Willard L. Guide to Grading Defects in Ponderosa and Sugar Pine Logs. Pacific Southwest Forest and Range Experiment Station : U.S. Department of Agriculture, Forest Service, 1962.
Warning: These citations may not always be 100% accurate.