O'Brien, J. A. (1994). Introduction to information systems (7th ed.). Irwin.
芝加哥风格引文O'Brien, James A. Introduction to Information Systems. 7th ed. Burr Ridge, Ill.: Irwin, 1994.
MLA引文O'Brien, James A. Introduction to Information Systems. 7th ed. Irwin, 1994.
警告：这些引文格式不一定是100％准确.