APA

Heffner Richard D, . (1954). A Documentary History of the United States. New York: Mentor BOOKs.

Chicago

Heffner Richard D, . 1954. A Documentary History of the United States. New York: Mentor BOOKs.

Harvard

Heffner Richard D, . (1954). A Documentary History of the United States. New York: Mentor BOOKs.

MLA

Heffner Richard D, . A Documentary History of the United States. New York: Mentor BOOKs. 1954.