Wiemann, M. C., & Green, D. W. (2007). Estimating Janka hardness from specific gravity for tropical and temperate species. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory.
Chicago Style (17th ed.) CitationWiemann, Michael Carl, and David W. Green. Estimating Janka Hardness from Specific Gravity for Tropical and Temperate Species. Madison, WI: U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2007.
MLA (9th ed.) CitationWiemann, Michael Carl, and David W. Green. Estimating Janka Hardness from Specific Gravity for Tropical and Temperate Species. U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2007.
Warning: These citations may not always be 100% accurate.