APA

Robertson R. M., . (1964). History of the American economy. New York: Harcourt Brace Jovanovich.

Chicago

Robertson Ross M, . 1964. History of the American economy. New York: Harcourt Brace Jovanovich.

Harvard

Robertson R. M., . (1964). History of the American economy. New York: Harcourt Brace Jovanovich.

MLA

Robertson Ross M, . History of the American economy. New York: Harcourt Brace Jovanovich. 1964.