Gaya APA
Valacich, J., Schneider, C. (2010).
Information systems today : managing the digital world (4th.ed.).
Upper Saddle River, New Jersey:
Pearson Education.
Gaya MLA
Valacich, Joe., Schneider, Christoph.
"Information systems today : managing the digital world".
4th.ed.
Upper Saddle River, New Jersey:
Pearson Education,
2010.
Teks.