APA (7th ed.) Citation

Little, E. L., Woodbury, R. O., & Wadsworth, F. H. (1974). Arboles de Puerto Rico y las Islas virgenes. U.S. Department of Agriculture.

Chicago Style (17th ed.) Citation

Little, Elbert Luther, Roy O. Woodbury, and Frank H. Wadsworth. Arboles De Puerto Rico Y Las Islas Virgenes. Washington, DC: U.S. Department of Agriculture, 1974.

MLA (9th ed.) Citation

Little, Elbert Luther, et al. Arboles De Puerto Rico Y Las Islas Virgenes. U.S. Department of Agriculture, 1974.