APA Style
The Essence of Information System : sistem informa. (2001).
Indonesia:
Elex Media Komputindo.
Chicago Style
The Essence of Information System : sistem informa.
1st edition.
Indonesia:
Elex Media Komputindo,
2001.
Text.
MLA Style
The Essence of Information System : sistem informa.
1st edition.
Indonesia:
Elex Media Komputindo,
2001.
Text.
Turabian Style
The Essence of Information System : sistem informa.
Indonesia:
Elex Media Komputindo,
2001.
Print.