APA ציטוט

Shelly, G. B., Cashman, T. J., & Foreman, R. O. (1996). Structured COBOL programming. Danvers, Mass.: International Thomson pub..

Trích dẫn kiểu Chicago

Shelly, Gary B., Thomas J. Cashman, và Roy O. Foreman. Structured COBOL Programming. Danvers, Mass.: International Thomson pub., 1996.

ציטוט MLA

Shelly, Gary B., Thomas J. Cashman, và Roy O. Foreman. Structured COBOL Programming. Danvers, Mass.: International Thomson pub., 1996.