Gaya APA
An Introduction to Database Systems. (1977).
California:
Addison-Wesley Publisher.
Gaya Chicago
An Introduction to Database Systems.
second edition.
California:
Addison-Wesley Publisher,
1977.
.
Gaya MLA
An Introduction to Database Systems.
second edition.
California:
Addison-Wesley Publisher,
1977.
.
Gaya Turabian
An Introduction to Database Systems.
California:
Addison-Wesley Publisher,
1977.
.