APA (7th ed.) Citation

Jennings, W. W. (1928). Introduction to American economic history. Thomas Y. Crowell.

Chicago Style (17th ed.) Citation

Jennings, Walter Wilson. Introduction to American Economic History. New York: Thomas Y. Crowell, 1928.

MLA (9th ed.) Citation

Jennings, Walter Wilson. Introduction to American Economic History. Thomas Y. Crowell, 1928.