APA (7th ed.) Citation

Davis, G. B., & Litecky, C. R. (1971). Elementary COBOL programming: A step by step approach. McGraw-Hill.

Chicago Style (17th ed.) Citation

Davis, Gordon B., and Charles R. Litecky. Elementary COBOL Programming: A Step by Step Approach. New York: McGraw-Hill, 1971.

MLA (8th ed.) Citation

Davis, Gordon B., and Charles R. Litecky. Elementary COBOL Programming: A Step by Step Approach. McGraw-Hill, 1971.