Gaya APA
Unger, I. (1982).
These United States: The Questions of Our Past, Volume I: To 1877 (Second Edition).
Canada:
Little, Brown and Company.
Gaya MLA
Unger, Irwin.
"These United States: The Questions of Our Past, Volume I: To 1877".
Second Edition
Canada:
Little, Brown and Company,
1982.
.