O'Brien, J. A. (2005). Introduction to information systems. London: ill.
Trích dẫn kiểu ChicagoO'Brien, James A. Introduction to Information Systems. London: ill, 2005.
MLA引文O'Brien, James A. Introduction to Information Systems. London: ill, 2005.
警告：這些引文格式不一定是100％准確.