Kretschmann, D. E., Evans, J. W., & Brown, L. (1999). Monitoring of visually graded structural lumber. United States Department of Agriculture, Forest Service, Forest Products Laboratory.
Chicago Style (17th ed.) CitationKretschmann, David E., James W. Evans, and Linda Brown. Monitoring of Visually Graded Structural Lumber. Madison, WI: United States Department of Agriculture, Forest Service, Forest Products Laboratory, 1999.
MLA (9th ed.) CitationKretschmann, David E., et al. Monitoring of Visually Graded Structural Lumber. United States Department of Agriculture, Forest Service, Forest Products Laboratory, 1999.
Warning: These citations may not always be 100% accurate.