YOURDON EDWARDS. (1982). LEARNING TO PROGRAMME IN STRUCTURED COBOL. PRENTICE -HALL INTERNATIONAL, INC.
Chicago-viite (17. p.)YOURDON EDWARDS. LEARNING TO PROGRAMME IN STRUCTURED COBOL. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1982.
MLA-viite (9. p.)YOURDON EDWARDS. LEARNING TO PROGRAMME IN STRUCTURED COBOL. PRENTICE -HALL INTERNATIONAL, INC, 1982.
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