Gaya APA

O’Brien, J, A. (2007). Enterprise Information Systems (13 edition) (13th edition). New York: McGraw-Hill Higher education.

Gaya MLA

O’Brien, James, A.. "Enterprise Information Systems (13 edition)". 13th edition New York: McGraw-Hill Higher education, 2007. Hibah Buku Dra. Anita Lestari,.