APA

Brown R. H., Whitaker J. R. & Harcourt Brace & Company (1921-1959). (1948). Historical geography of the United States. New York: Harcourt, Brace and Company.

Chicago

Brown Ralph H, Whitaker Joe Russell and Harcourt Brace & Company (1921-1959). 1948. Historical geography of the United States. New York: Harcourt, Brace and Company.

Harvard

Brown R. H., Whitaker J. R. and Harcourt Brace & Company (1921-1959). (1948). Historical geography of the United States. New York: Harcourt, Brace and Company.

MLA

Brown Ralph H, Whitaker Joe Russell and Harcourt Brace & Company (1921-1959). Historical geography of the United States. New York: Harcourt, Brace and Company. 1948.