An economic history of the United States,
by Edward Frank Humphrey ....
APA Citation
Humphrey, E. Frank. (1931). An economic history of the United States. New York: The Century co.
MLA Citation
Humphrey, Edward Frank, 1878-. An Economic History of the United States. New York: The Century co, 1931.
Warning: These citations may not always be complete (especially for serials).