pdf online search and view

ISBN 0-7923-8020-7. Retrieved May 31, 2010.  Adelson, Andrea (28 October 1996). "Kelley Blue Book Tests the World Wide Web as a Distribution Source". The New York Times

Amedeo p.257, Vaughan p.194 Branham p.131 Amedeo p.77, 127 Lanning p.245 Kelley p.30, Silber p.7 Branham p.132 McWhirter 2012, p148 Harwell pp.3,4 Branham