devis jessica, ZA F. THE EFFECTIVENESS METHOD OF LECTURES AND DISCUSSION ON INCREASED KNOWLEDGE CHILD IV GRADERSABOUT WASHING HANDS USING SOAP AT SDN 044. J Keskom [Internet]. 2017 Dec. 31 [cited 2024 Nov. 23];3(4):159-63. Available from: https://jurnal.htp.ac.id/index.php/keskom/article/view/205