APA (7e ed.) Bronvermelding
Unger, I., & Unger, D. (1995). These United States: The questions of our past (6th, combined ed.). Prentice Hall.
Chicago (17e ed.) Bronvermelding
Unger, Irwin, en Debi Unger. These United States: The Questions of Our Past. 6th, combined ed. Englewood Cliffs, N.J.: Prentice Hall, 1995.
MLA (9e ed.) Bronvermelding
Unger, Irwin, en Debi Unger. These United States: The Questions of Our Past. 6th, combined ed. Prentice Hall, 1995.
Let op: Deze citaties zijn niet altijd 100% accuraat.