APA (7th ed.) Citation

Colum, M. (1944). From these roots: The ideas that have made modern literature. Columbia university press.

Chicago Style (17th ed.) Citation

Colum, Mary. From These Roots: The Ideas That Have Made Modern Literature. New York: Columbia university press, 1944.

MLA (9th ed.) Citation

Colum, Mary. From These Roots: The Ideas That Have Made Modern Literature. Columbia university press, 1944.