I don’t know if there is a consensus, but I recently did the following:
670 [citation book title], accessed via Google Books, [date of search] : |b (data found)
I don’t know that there is a compelling reason to cite it that way as opposed to acting as if the book were in hand, but it does document your source.
Principal Rare Book Cataloger
From: Program for Cooperative
Cataloging [mailto:[log in to unmask]] On Behalf
Of Mark Scharff
Sent: Friday, November 30, 2007 8:57 AM
To: [log in to unmask]
Subject: [PCCLIST] Google Books citation in authority records?
Pardon me if this has gone by before. Is there a consensus about how to cite information from a book being viewed through Google Books? Is there any reason to specify that mode of use, as opposed to giving the citation as though the book was in hand? I can't think of one, but opinions welcome.
Mark Scharff, Music Cataloger
Gaylord Music Library