Gaya APA
Hoffer...[et.A], J, A. (2008).
Modern systems analysis and design (4 th Ed, 3 rd Impression).
Indianapolis:
Pearson education.
Gaya MLA
Hoffer...[et.A], Jeffrey, A..
"Modern systems analysis and design".
4 th Ed, 3 rd Impression
Indianapolis:
Pearson education,
2008.
Text.