Harahap, Olivia Feby Mon. 2017. “A COMPARATIVE STUDY BETWEEN TEACHING PROCEDURE TEXT BY USING DEMONSTRATION AND THINK PAIR SHARE (TPS) METHODS”. Jurnal Kesehatan Ilmiah Indonesia / Indonesian Health Scientific Journal 2 (3):74-78. https://jurnal.unar.ac.id/index.php/health/article/view/113.