Gaya APA

Edwards, C. et al (2001). The Essence of Information System : Sisem Infprmasi (Ed.ke-1 ; Cet.ke-1). Yogyakarata: Andi.

Gaya MLA

Edwards, Chris. et al. "The Essence of Information System : Sisem Infprmasi". Ed.ke-1 ; Cet.ke-1 Yogyakarata: Andi, 2001. Textbook.