Norton, P. (2003). Peter Norton's essential concepts (5th ed.). Glencoe / McGraw-Hill.
芝加哥风格引文Norton, Peter. Peter Norton's Essential Concepts. 5th ed. Columbus, Ohio: Glencoe / McGraw-Hill, 2003.
MLA引文Norton, Peter. Peter Norton's Essential Concepts. 5th ed. Glencoe / McGraw-Hill, 2003.
警告：这些引文格式不一定是100％准确.