APA (7th ed.) Citation

(1997). Teach yourself Cobol in 21 days / Mo Budlong.

Chicago Style (17th ed.) Citation

Teach Yourself Cobol in 21 Days / Mo Budlong. 1997.

MLA (9th ed.) Citation

Teach Yourself Cobol in 21 Days / Mo Budlong. 1997.

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