Uchytil, Ronald J. (1991). "Betula papyrifera". Fire Effects Information System (FEIS). US Department of Agriculture (USDA), Forest Service (USFS), Rocky Mountain Research Station, Fire Sciences Laboratory. Retrieved 5 July 2016.
srs.fs.usda.gov
Safford, L. O.; Bjorkbom, John C.; Zasada, John C. (2023-04-18). "Betula papyrifera Marsh". Forest Service, U.S. Department of Agriculture. Retrieved 2023-04-18.