APA

SHELDON T., . (1989). INTRODUCING PC-DOS AND MS-DOS. NEW YORK: MCGRAW-HILL.

Chicago

SHELDON THOMAS, . 1989. INTRODUCING PC-DOS AND MS-DOS. NEW YORK: MCGRAW-HILL.

Harvard

SHELDON T., . (1989). INTRODUCING PC-DOS AND MS-DOS. NEW YORK: MCGRAW-HILL.

MLA

SHELDON THOMAS, . INTRODUCING PC-DOS AND MS-DOS. NEW YORK: MCGRAW-HILL. 1989.