Haryani, S., 		Astiningsih, A., 		Supardi, K., & 		Kurniawan, C.
(2017).
 Construction of Metacognition Skills Through Students` Worksheet with Problem Based Learning Approaches.
<em>Proceeding Of Chemistry Conference, 2</em>, 37-41.
Retrieved from <a href="https://jos.unsoed.ac.id/index.php/jccp/article/view/170" target="_new">https://jos.unsoed.ac.id/index.php/jccp/article/view/170</a>