APA (7th ed.) Citation

Popkin, G. S. (1986). Comprehensive structured COBOL (2nd ed.). Kent Pub. Co..

Chicago Style (17th ed.) Citation

Popkin, Gary S. Comprehensive Structured COBOL. 2nd ed. Boston, Mass.: Kent Pub. Co., 1986.

MLA (9th ed.) Citation

Popkin, Gary S. Comprehensive Structured COBOL. 2nd ed. Kent Pub. Co., 1986.

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