Gaya APA

O`brien, J, A. (2008). Introduction to information systems (12 th Ed, 7 th Reprint). Hoboken, NJ: Taylor & Francis Inc..

Gaya MLA

O`brien, James, A.. "Introduction to information systems". 12 th Ed, 7 th Reprint Hoboken, NJ: Taylor & Francis Inc., 2008. Text.