Cita APA

Freeman, O. W. (1959). Essentials of geography (2a. ed.). New York: McGraw-Hill.

Citación estilo Chicago

Freeman, Otis W. Essentials of Geography. 2a. ed. New York: McGraw-Hill, 1959.

Cita MLA

Freeman, Otis W. Essentials of Geography. 2a. ed. New York: McGraw-Hill, 1959.