Gaya APA
User's Guide : Microsoft MS-DOS 6. (1993).
USA:
Microsoft Corporation.
Gaya Chicago
User's Guide : Microsoft MS-DOS 6.
.
USA:
Microsoft Corporation,
1993.
.
Gaya MLA
User's Guide : Microsoft MS-DOS 6.
.
USA:
Microsoft Corporation,
1993.
.
Gaya Turabian
User's Guide : Microsoft MS-DOS 6.
USA:
Microsoft Corporation,
1993.
.