Gaya APA

Heffner, R. (1953). A documentary history of the United States, (2d pr) -- Mentor books, M 78 Penerbitan asli 1952. . New York: The new American library.

Gaya MLA

Heffner, R.D.. "A documentary history of the United States, (2d pr) -- Mentor books, M 78 Penerbitan asli 1952. ". New York: The new American library, 1953. Buku.