I understand that the 14th edition of the Chicago Manual of Style
addresses the issue of electronic sources in sections 15.426 and
16.209. The issue is also taken up in the Chicago Manual of Style
FAQ, found at
http://www.press.uchicago.edu/Misc/Chicago/cmosfaq.html
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Anne W. Ackerson
Providing Management, Development & Creative Services for
Cultural Institutions
109 N. 9th St., Olean, New York 14760