NATIONAL ASSOCIATION OF SOFTWARE AND SERVICE COMP. (1999). NASSCOM`S HANDBOOK I.T. ENABLED SERVICES. NASSCOM.
芝加哥风格引文NATIONAL ASSOCIATION OF SOFTWARE AND SERVICE COMP. NASSCOM`S HANDBOOK I.T. ENABLED SERVICES. NEW DELHI: NASSCOM, 1999.
MLA引文NATIONAL ASSOCIATION OF SOFTWARE AND SERVICE COMP. NASSCOM`S HANDBOOK I.T. ENABLED SERVICES. NASSCOM, 1999.
警告：这些引文格式不一定是100％准确.