Παραπομπή APA

Shelly, G. B., & Cashman, T. J. (1977). Introduction to computer programming structured Cobol. California: Anaheim publishing company.

Παραπομπή Chicago Style

Shelly, Gary B., and Thomas J. Cashman. Introduction to Computer Programming Structured Cobol. California: Anaheim publishing company, 1977.

Παραπομπή MLA

Shelly, Gary B., and Thomas J. Cashman. Introduction to Computer Programming Structured Cobol. California: Anaheim publishing company, 1977.

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