APA (7th ed.) Citation

Langer, W. L., & Gleason, S. E. (1953). The undeclared war: 1940 - 1941 (1. ed.). Harper.

Chicago Style (17th ed.) Citation

Langer, William L., and Sarell Everett Gleason. The Undeclared War: 1940 - 1941. 1. ed. New York, NY: Harper, 1953.

MLA (9th ed.) Citation

Langer, William L., and Sarell Everett Gleason. The Undeclared War: 1940 - 1941. 1. ed. Harper, 1953.