Cita APA

Brown, R. H. (1948). Historical geography of the United States. New York: Harcourt Brace.

Citación estilo Chicago

Brown, Ralph H. Historical Geography of the United States. New York: Harcourt Brace, 1948.

Cita MLA

Brown, Ralph H. Historical Geography of the United States. New York: Harcourt Brace, 1948.