APA (7th ed.) Citation

O'Donovan, P. (1968). The United States. Time-Life Books.

Chicago Style (17th ed.) Citation

O'Donovan, Patrick. The United States. New York: Time-Life Books, 1968.

MLA (9th ed.) Citation

O'Donovan, Patrick. The United States. Time-Life Books, 1968.

Warning: These citations may not always be 100% accurate.