APA Style
USER'S GUIDE FOR THE MICROSOFT WINDOWS OPERATING SYSTEM. (1991).
AMERICA:
MICROSOFT CORPORATION.
Chicago Style
USER'S GUIDE FOR THE MICROSOFT WINDOWS OPERATING SYSTEM.
.
AMERICA:
MICROSOFT CORPORATION,
1991.
Text.
MLA Style
USER'S GUIDE FOR THE MICROSOFT WINDOWS OPERATING SYSTEM.
.
AMERICA:
MICROSOFT CORPORATION,
1991.
Text.
Turabian Style
USER'S GUIDE FOR THE MICROSOFT WINDOWS OPERATING SYSTEM.
AMERICA:
MICROSOFT CORPORATION,
1991.
Print.