Gaya APA
User's Guide Microsoft Works. (1989).
Singapore:
Microsoft corporation.
Gaya Chicago
User's Guide Microsoft Works.
.
Singapore:
Microsoft corporation,
1989.
Text.
Gaya MLA
User's Guide Microsoft Works.
.
Singapore:
Microsoft corporation,
1989.
Text.
Gaya Turabian
User's Guide Microsoft Works.
Singapore:
Microsoft corporation,
1989.
Print.