APA

Johnson Thomas Herbert, . (1966). The Oxford companion to American history. New York: Oxford University Press.

Chicago

Johnson Thomas Herbert, . 1966. The Oxford companion to American history. New York: Oxford University Press.

Harvard

Johnson Thomas Herbert, . (1966). The Oxford companion to American history. New York: Oxford University Press.

MLA

Johnson Thomas Herbert, . The Oxford companion to American history. New York: Oxford University Press. 1966.