APA (7th ed.) Citation

Seymour, C. (1942). American diplomacy during the world war. The Johns Hopkins press.

Chicago Style (17th ed.) Citation

Seymour, Charles. American Diplomacy During the World War. Baltimore: The Johns Hopkins press, 1942.

MLA (9th ed.) Citation

Seymour, Charles. American Diplomacy During the World War. The Johns Hopkins press, 1942.