Tolong jelaskan mengenai Bacaan tambahan dari Musikal rock

Wollman, Elizabeth L. The Theater Will Rock: A History of the Rock Musical, from Hair to Hedwig, University of Michigan Press (2006) ISBN 0-472-11576-6

Warfield, Scott. "From Hair to Rent: Is 'Rock' a Four-Letter Word on Broadway?," The Cambridge Companion to the Musical, rev. sec. ed., William Everett and Paul Laird, eds., Cambridge University Press (2008) ISBN 0-521-79639-3