References
Monroe, G. M., Mapes, B. J., & McLaughlin, P. L. (1975). Natural Resources Lake Earl and the Smith River Delta (Vol. #10). CA: Department of Fish and Game.
Randall, W. R., Keniston, R. F., Bever, D. A., & Sensen, E. C. (1988). Manual of Oregon Trees and Shrubs. Corvallis, OR: OSU Book Store.