APA

Harris S. E., . (1957). International and interregional economics. New York: McGraw-Hill.

Chicago

Harris Seymour E, . 1957. International and interregional economics. New York: McGraw-Hill.

Harvard

Harris S. E., . (1957). International and interregional economics. New York: McGraw-Hill.

MLA

Harris Seymour E, . International and interregional economics. New York: McGraw-Hill. 1957.