Rigor, Dalisay V., et.al.,  c2014. <br/><br/>
The  Learner's Development and Environment :  Field Study 1 / 
Rigor, Dalisay V., et.al. 
 - Plaridel, Bulacan, Philippines :  St. Andrew Publishing House,  c2014. 
 - xiv., p.73 :  ill ;  12 inch. 
<br/><br/><label>ISBN: </label>978-971-047-231-4