Gaya APA
DATE, C. J.. (1981).
An Introduction to database systems .
Canada:
Addison-wesley.
Gaya Chicago
DATE, C. J..
An Introduction to database systems.
Canada:
Addison-wesley,
1981.
Textbook.
Gaya MLA
DATE, C. J..
An Introduction to database systems.
Canada:
Addison-wesley,
1981.
Textbook.
Gaya Turabian
DATE, C. J..
An Introduction to database systems.
Canada:
Addison-wesley,
1981.
Textbook.