edit by Jack C. Richards and David Nunan edit by Jack C. Richards and Theodore S. Rodgers edit by Dale T. Griffee and David Hough edited by Mark G. Edwards and Alvin Lee. edited by Rashna Wadia Richards and David T. Johnson. edit by David M. Davidson and David Blot edit by Jack C. Richards edit by Harvey P. Greenspan and David J. Benney edited by Alan Richards and Philip L. Martin edited by Nicholas Morris and David Vines.