Heffner, R. D. (1956). A documentary History of the united states. The New American Library.
Chicagoスタイル(17版)引用形式Heffner, Richard D. A Documentary History of the United States. New York: The New American Library, 1956.
MLA(9版)引用形式Heffner, Richard D. A Documentary History of the United States. The New American Library, 1956.
警告: この引用は必ずしも正確ではありません.