Holes is written by Louis SacharLouis Sachar wrote Wayside School is Falling Down
[Human]: I like the movie and novel Holes.  Have you seen or read it? [Assistant]: Not much idea. But I know it is written by Louis Sachar. Are you interested in this writer? [Human]: Yes, what else has he written? 
Wayside School is Falling Down is written by  Louis Sachar. Have you read this book?