Udell, J. (2000). Practical internet groupware. O'Reilly; Mumbai : Shroff.
芝加哥风格引文Udell, Jon. Practical Internet Groupware. Sebastopol CA: O'Reilly; Mumbai : Shroff, 2000.
MLA引文Udell, Jon. Practical Internet Groupware. O'Reilly; Mumbai : Shroff, 2000.
警告：这些引文格式不一定是100％准确.