APA Style
Whitten, J, L. et al (2004).
System Analisis Design Methods (International Edition).
Nort America:
Akademika Pressindo.
MLA Style
Whitten, Jeffery, L. et al.
"System Analisis Design Methods".
International Edition
Nort America:
Akademika Pressindo,
2004.
Perpustakaan KALBIS.