Wajnryb Ruth <br/><br/>
Classroom observation tasks: A resource book for language teachers and trainers 

 - South Asian Edition 
 - Delhi, India  Cambridge University Press  2010 
 - viii,145p 
 - Cambridge Teacher Training and Development .
<br/><br/><label>ISBN: </label>978-0-521-18996-5 
<br/><br/><label>Source: </label>TextBook