Gaya APA
Jr., S, T., Douglas, K, D. (1986).
ANSI STRUCTURED COBOL An Introduction .
HOMEWOOD, ILLINOIS:
SDC, Yorkshire.
Gaya MLA
Jr., Steve, Teglovic,., Douglas, Kenneth, D..
"ANSI STRUCTURED COBOL An Introduction".
HOMEWOOD, ILLINOIS:
SDC, Yorkshire,
1986.
Textbook.