APA (7th ed.) Citation

Frothingham, T. G. (1971). The American reinforcement in the World War. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Frothingham, Thomas Goddard. The American Reinforcement in the World War. Freeport, N.Y.: Books for Libraries Press, 1971.

MLA (8th ed.) Citation

Frothingham, Thomas Goddard. The American Reinforcement in the World War. Books for Libraries Press, 1971.