Ülgen, Gülten. <br/><br/>
Kavram geliştirme / 
by Gülten Ülgen. 
 - 3rd ed. 
 - Ankara :  Pegem,  2001. 
 - 196 p. : ;  20 cm. 
<br/><br/> This book is in Turkish. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Concept Learning.