MLA

Products Laboratory (U.S.), Forest, b. 1885 Gerry, and Carol M Miller. Obeche, Ayous, Samba, African Whitewood : Triplochiton Scleroxylon K. Schum., Family Sterculiaceae Or Triplochitonaceae. : Madison, Wis. : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 1954.