APA (7th ed.) Citation

United States. Forest Service. (1936). Caribbean National Forest of Puerto Rico[historical background, establishment, and forestry developments]. [s.n.].

Chicago Style (17th ed.) Citation

United States. Forest Service. Caribbean National Forest of Puerto Rico[historical Background, Establishment, and Forestry Developments]. [Washington]: [s.n.], 1936.

MLA (9th ed.) Citation

United States. Forest Service. Caribbean National Forest of Puerto Rico[historical Background, Establishment, and Forestry Developments]. [s.n.], 1936.