Template:Cooper & Record, 1931
- Cooper, G.P. & Record, S.J. 1931. The Evergreen Forests of Liberia: A Report on Investigations made in the West African Republic of Liberia by the Yale University School of Forestry in Cooperation with the Firestone Plantations Company. Yale University School of Forestry Bulletin No. 31. New Haven: Yale University. EliScholar
