APA (7th ed.) Citation

Wendel, T. M., & Williams, B. (1969). Introduction to data processing and COBOL. McGraw-Hill.

Chicago Style (17th ed.) Citation

Wendel, Thomas M., and Bill Williams. Introduction to Data Processing and COBOL. New York: McGraw-Hill, 1969.

MLA (9th ed.) Citation

Wendel, Thomas M., and Bill Williams. Introduction to Data Processing and COBOL. McGraw-Hill, 1969.