APA (7th ed.) Citation

Bassett, J. S. (1917). The middle group of American historians. Macmillan.

Chicago Style (17th ed.) Citation

Bassett, John Spencer. The Middle Group of American Historians. New York: Macmillan, 1917.

MLA (9th ed.) Citation

Bassett, John Spencer. The Middle Group of American Historians. Macmillan, 1917.