APA (7th ed.) Citation

Unger, I. (1989). These United States: The Questions of our past (4th ed.). Premtoce Hall.

Chicago Style (17th ed.) Citation

Unger, Irwin. These United States: The Questions of Our Past. 4th ed. New Jersey: Premtoce Hall, 1989.

MLA (9th ed.) Citation

Unger, Irwin. These United States: The Questions of Our Past. 4th ed. Premtoce Hall, 1989.

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