APA aipamena

Bookman, H. (1993). COBOL/370 for VS COBOL and COBOL II programmers. McGraw-Hill.

Chicago Style aipamena

Bookman, Harvey. COBOL/370 for VS COBOL and COBOL II Programmers. New York: McGraw-Hill, 1993.

MLA aipamena

Bookman, Harvey. COBOL/370 for VS COBOL and COBOL II Programmers. McGraw-Hill, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.