^“IRC clients primarily for the Unix shell”. irchelp.org (May 9, 2004). November 10, 2010閲覧。 “Note on the pronunciation of ircII: Some of us like to call it "eye-are-see-two". However, the other main variant, "irk-two" is probably historically more accurate. It's also commonly called "urk-ee" which is most definitely wrong. Feel free to disagree with us, we're not going to argue the point to death. What's pretty certain is that it is "two" and not "ee".”
^Levine, John R.; Young, Margaret Levine (May 9, 1997). More Internet for Dummies (3rd ed.). Hungry Minds. p. 150. ISBN0-7645-0135-6
^Schenk, Thomas (July 7, 2000). Red Hat Linux System Administration Unleashed. Sams.
ISBN0-672-31755-9. "It is probably the oldest and most commonly used IRC client in the Linux/UNIX community."
^Piccard, Paul; Brian Baskin; George Spillman; Marcus Sachs (May 1, 2005). “Common IRC Clients by OS”. Securing IM and P2P Applications for the Enterprise (1st ed.). Syngress. p. 428.
ISBN1-59749-017-2. "The ircII client is possibly the oldest usable client available today."
^Piccard, Paul; Brian Baskin; George Spillman; Marcus Sachs (May 1, 2005). “IRC Networks and Security”. Securing IM and P2P Applications for the Enterprise (1st ed.). Syngress. p. 386.
ISBN1-59749-017-2. "The authors of the ircII software package originally pioneered file transfers over IRC."
^See the 'NOTES' and 'source/ctcp.c' files included with ircii-2.1.4e.tar.gz[リンク切れ]
^See the 'UPDATES' and 'source/dcc.c' files included with ircii-2.1.4e.tar.gz[リンク切れ]
^Rollo, Troy. “A description of the DCC protocol”. irchelp.org. November 10, 2010閲覧。 “The first comment I should make is that the DCC protocol was never designed to be portable to clients other than IRCII. As such I take no responsibility for it being difficult to implement for other clients.”
