APA (7th ed.) Citation

Price, W. T., & Olson, J. L. (1977). Elements of COBOL programming (2. printing.). Dryden Press.

Chicago Style (17th ed.) Citation

Price, Wilson T., and Jack L. Olson. Elements of COBOL Programming. 2. printing. Hillsdale, Ill: Dryden Press, 1977.

MLA (9th ed.) Citation

Price, Wilson T., and Jack L. Olson. Elements of COBOL Programming. 2. printing. Dryden Press, 1977.