APA

Little E. L., Wadsworth F. H., . (1964). Common trees of Puerto Rico and the Virgin Islands. Washington D.C., USA: U.S. Department of Agriculture.

Chicago

Little Elbert L, Wadsworth Frank H, . 1964. Common trees of Puerto Rico and the Virgin Islands. Washington D.C., USA: U.S. Department of Agriculture.

Harvard

Little E. L., Wadsworth F. H., . (1964). Common trees of Puerto Rico and the Virgin Islands. Washington D.C., USA: U.S. Department of Agriculture.

MLA

Little Elbert L, Wadsworth Frank H, . Common trees of Puerto Rico and the Virgin Islands. Washington D.C., USA: U.S. Department of Agriculture. 1964.