APA (7th ed.) Citation

Thorp, W., Curti, M., & Baker, C. (1941). American issues. J. B. Lippincott company.

Chicago Style (17th ed.) Citation

Thorp, Willard, Merle Curti, and Carlos Baker. American Issues. Chicago, Philadelphia [etc.]: J. B. Lippincott company, 1941.

MLA (9th ed.) Citation

Thorp, Willard, et al. American Issues. J. B. Lippincott company, 1941.