^Bogle, A. Linn (1991). "In memoriam: Charlotte Georgia Nast". Plant Science Bulletin. 37 (2): 15. OCLC228162501.
^Pigg, K.B.; Dillhoff, R.M.; DeVore, M.L.; Wehr, W.C. (2007). "New diversity among the Trochodendraceae from the Early/Middle Eocene Okanogan Highlands of British Columbia, Canada, and Northeastern Washington State, United States". International Journal of Plant Sciences. 168 (4): 521–532. doi:10.1086/512104. S2CID86524324.