Rudolph F. Verderber (Verderber, Rudolph F.)

• 
  The Challenge of Effective Speaking
  

  by Rudolph F. Verderber , Kathleen S. Verderber

  ISBN 0534646972 (0-534-64697-2)
  Softcover, Wadsworth Pub Co

  
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• 
  Communicate!
  

  by Rudolph F. Verderber , Kathleen S. Verderber

  ISBN 0534639372 (0-534-63937-2)
  Softcover, Thomson/Wadsworth

  
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