APA (7th ed.) Citation

Chamberlin, W. H. (1941). The world's iron age. The Macmillan company.

Chicago Style (17th ed.) Citation

Chamberlin, William Henry. The World's Iron Age. New York: The Macmillan company, 1941.

MLA (9th ed.) Citation

Chamberlin, William Henry. The World's Iron Age. The Macmillan company, 1941.