APA (7th ed.) Citation

Dupuy, R. E. (1971). The National Guard: A compact history. Hawthorn Books.

Chicago Style (17th ed.) Citation

Dupuy, R. Ernest. The National Guard: A Compact History. New York: Hawthorn Books, 1971.

MLA (9th ed.) Citation

Dupuy, R. Ernest. The National Guard: A Compact History. Hawthorn Books, 1971.