APA (7th ed.) Citation

Northwestern University, Evanston, Ill. Dept. of Geography. (1952). The rural land classification program of Puerto Rico. s.n.

Chicago Style (17th ed.) Citation

Northwestern University, Evanston, Ill. Dept. of Geography. The Rural Land Classification Program of Puerto Rico. Evanston, Ill: s.n, 1952.

MLA (9th ed.) Citation

Northwestern University, Evanston, Ill. Dept. of Geography. The Rural Land Classification Program of Puerto Rico. s.n, 1952.