Edwards, c. (1995). The essence of information systems. Prentice hall.
芝加哥风格引文Edwards, chris. The Essence of Information Systems. New delhi: Prentice hall, 1995.
MLA引文Edwards, chris. The Essence of Information Systems. Prentice hall, 1995.
警告：这些引文格式不一定是100％准确.