APA (7th ed.) Citation

Morris, W., & Morris, M. (1975). Harper dictionary of contemporary usage. Harper & Row.

Chicago Style (17th ed.) Citation

Morris, William, and Mary Morris. Harper Dictionary of Contemporary Usage. New York: Harper & Row, 1975.

MLA (9th ed.) Citation

Morris, William, and Mary Morris. Harper Dictionary of Contemporary Usage. Harper & Row, 1975.