APA (7. basım) Alıntı

ASHLEY RUTH. (1984). USING STRUCTURED COBOL,COBOL-2. WILEY EASTERN LTD.

Chicago Style (17. basım) Atıf

ASHLEY RUTH. USING STRUCTURED COBOL,COBOL-2. SINGAPORE: WILEY EASTERN LTD, 1984.

MLA (9th ed.) Atıf

ASHLEY RUTH. USING STRUCTURED COBOL,COBOL-2. WILEY EASTERN LTD, 1984.