APA (7th ed.) Citation

Nichols, R. F., Bagley, W. C., & Beard, C. A. (1938). America today. Macmillan Co..

Chicago Style (17th ed.) Citation

Nichols, Roy F., William C. Bagley, and Charles A. Beard. America Today. New York: Macmillan Co., 1938.

MLA (8th ed.) Citation

Nichols, Roy F., et al. America Today. Macmillan Co., 1938.