APA (7th ed.) Citation

Ripley, W. Z. (1937). The races of Europe: A sociological study (Lowell institute lectures). D. Appleton-Century Co..

Chicago Style (17th ed.) Citation

Ripley, William Zebina. The Races of Europe: A Sociological Study (Lowell Institute Lectures). New York: D. Appleton-Century Co., 1937.

MLA (9th ed.) Citation

Ripley, William Zebina. The Races of Europe: A Sociological Study (Lowell Institute Lectures). D. Appleton-Century Co., 1937.