APA citiranje

Popkin, G. S. (1989). Comprehensive structured COBOL (3rd ed.). PWS-Kent Pub. Co..

Chicago Style (17th ed.) Citation

Popkin, Gary S. Comprehensive Structured COBOL. 3rd ed. Boston: PWS-Kent Pub. Co., 1989.

MLA citiranje

Popkin, Gary S. Comprehensive Structured COBOL. 3rd ed. PWS-Kent Pub. Co., 1989.