APA (7th ed.) Citation

Little, E. L., & Woodbury, R. O. (1980). Rare and endemic trees of Puerto Rico and the Virgin Islands. U.S. Dept. of Agriculture, Forest Service.

Chicago Style (17th ed.) Citation

Little, Elbert L., and Roy O. Woodbury. Rare and Endemic Trees of Puerto Rico and the Virgin Islands. Washington, D.C.: U.S. Dept. of Agriculture, Forest Service, 1980.

MLA (9th ed.) Citation

Little, Elbert L., and Roy O. Woodbury. Rare and Endemic Trees of Puerto Rico and the Virgin Islands. U.S. Dept. of Agriculture, Forest Service, 1980.