*LITTLE, E.L. Jr. ; WOODBURY, R.P. & WADSWORTH, F.H., 1976. - Flora of Virgin Gorda (British Virgin Islands). USDA Forest Serv., Res. Paper ITF 21, 36 p., 2 maps, 1 photo.
*LITTLE, E.L. ; WADSWORTH, F.H., 1964. - Common trees of Puerto Rico and the Virgin Islands, Agric. Handbook n° 249, U.S.D.A., 10 + 548 p., 250 Fig., Washington, DC.
*LITTLE, E. L. & WADSWORTH, F.H., 1964. - Common trees of Puerto Rico and the Virgin Islands, x + 548 p., 250 fig., Agric. Handbook. n° 249, USDA Forest Service, Washington DC.