APA aipamena

WORTH THOMAS. (1984). COBOL FOR BEGINNERS. PRENTICE -HALL INTERNATIONAL, INC.

Chicago Style aipamena

WORTH THOMAS. COBOL FOR BEGINNERS. NEW JERSEY,USA: PRENTICE -HALL INTERNATIONAL, INC, 1984.

MLA aipamena

WORTH THOMAS. COBOL FOR BEGINNERS. PRENTICE -HALL INTERNATIONAL, INC, 1984.