APA (7th ed.) Citation

Singletary, W. E. (1986). Introduction to COBOL: A primer and programming guid. Addision-Wesley.

Chicago Style (17th ed.) Citation

Singletary, Wilson E. Introduction to COBOL: A Primer and Programming Guid. Reading, MA: Addision-Wesley, 1986.

MLA (9th ed.) Citation

Singletary, Wilson E. Introduction to COBOL: A Primer and Programming Guid. Addision-Wesley, 1986.

Warning: These citations may not always be 100% accurate.