APA
Puerto Rico. Institute of Tropical Forestry, . (1999). Institute of tropical forestry : the first fifty years. : Institute of Tropical Forestry.
Chicago
Puerto Rico. Institute of Tropical Forestry, . 1999. Institute of tropical forestry : the first fifty years. : Institute of Tropical Forestry.
Harvard
Puerto Rico. Institute of Tropical Forestry, . (1999). Institute of tropical forestry : the first fifty years. : Institute of Tropical Forestry.
MLA
Puerto Rico. Institute of Tropical Forestry, . Institute of tropical forestry : the first fifty years. : Institute of Tropical Forestry. 1999.
