“The Effectiveness of Youtube Modified Crossword Puzzle to Promote Oral and Dental Health Towards Students of Elementary School 015 Sungai Sirih”. Jurnal kesehatan komunitas (Journal of community health) 7, no. 1 (April 30, 2021): 90–96. Accessed August 16, 2026. https://jurnal.htp.ac.id/index.php/keskom/article/view/865.