Byars, Betsy Cromer. <br/><br/>
The Cybil war / 
Betsy Byars ; illustrated by Gail Owens. 
 - New York, N.Y., U.S.A. :  Puffin Books,  1990, c1981. 
 - x, 126 p. :  ill. ;  20 cm. 
<br/><br/> "Ages 8-12"--P. [4] of cover.  "An ALA notable book"--P. [4] of cover.  "First published in the United States of America by Viking Penguin, a division of Penguin Books USA Inc., 1981"--T.p. verso. 
<br/><br/> Simon learns some hard lessons about good and bad friendships when his good friend Tony's stories involve him in some very troublesome and complicated situations. 
<br/><br/><label>ISBN: </label>0140343563 : 
<br/><br/><label>LCCN: </label>89-036923 /AC 
<br/><br/><label>LC Class. No.: </label>PZ7.B9836  / Cy 1990