APA (7th ed.) Citation

Boak, A. E. R., Hyma, A., & Slosson, P. W. (1938). The growth of European civilization. F. S. Crofts.

Chicago Style (17th ed.) Citation

Boak, Arthur Edward Romilly, Albert Hyma, and Preston William Slosson. The Growth of European Civilization. New York: F. S. Crofts, 1938.

MLA (9th ed.) Citation

Boak, Arthur Edward Romilly, et al. The Growth of European Civilization. F. S. Crofts, 1938.