Chicago Manual 14.210, 214, 15.53
See examples below for:
Email
Notes-Bibliography Style
1st Footnote or Endnote
1. Patricia Burns, e-mail message to author, December 15, 2008.
Bibliography
Usually not cited in bibliography.
Author-Date Style
1st Parenthetical Note
(Patricia Burns, e-mail message to author, December 15, 2008)
Reference List
Usually not cited in reference list.
Email Discussion Group
Notes-Bibliography Style
1st Footnote or Endnote
17. Dodger Fan, post to "The Atomic Bombing of Japan," History forum,
Amazon.com, September 1, 2011, 12:57:28 p.m., http://www.amazon.com
/forum/history/.
Bibliography
Usually not cited in bibliography.
Author-Date Style
1st Parenthetical Note
(Dodger Fan 2011)
Reference List
Dodger Fan. 2011. Post to "The Atomic Bombing of Japan." History forum,
Amazon.com. September 1, 2011, 12:57:28 p.m. http://www.amazon.com
/forum/history/