"by Sally Grindley; illustrated by Anthony Browne" <br/><br/>
Knock knock who's there? 

 -  London : Puffin Books, 1995, c1985.  1995 
 - 28 
<br/><br/><label>ISBN: </label>9780140555561 
<br/><br/><label>Dewey Class. No.: </label>F823  / 2794