APA (7th ed.) Citation

(1973). Modular programming in COBOL / [by] Russell M. Armstrong.

Chicago Style (17th ed.) Citation

Modular Programming in COBOL / [by] Russell M. Armstrong. 1973.

MLA (9th ed.) Citation

Modular Programming in COBOL / [by] Russell M. Armstrong. 1973.

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