APA引文

Unger, I. (1995). These United States: The questions of our past. Englewood Cliffs, N.J: Prentice-Hall.

Trích dẫn kiểu Chicago

Unger, Irwin. These United States: The Questions of Our Past. Englewood Cliffs, N.J: Prentice-Hall, 1995.

MLA引文

Unger, Irwin. These United States: The Questions of Our Past. Englewood Cliffs, N.J: Prentice-Hall, 1995.

警告：這些引文格式不一定是100％准確.