APA (7th ed.) Citation

Thomas, H. C., & Hamm, W. A. (1939). Modern Europe (Rev. ed.). H. Holt and Co..

Chicago Style (17th ed.) Citation

Thomas, Harrison Cook, and William Albert Hamm. Modern Europe. Rev. ed. New York: H. Holt and Co., 1939.

MLA (8th ed.) Citation

Thomas, Harrison Cook, and William Albert Hamm. Modern Europe. Rev. ed. H. Holt and Co., 1939.