“Pengaruh Promkes Melalui Aplikasi Whatsapp Terhadap Tingkat Kecemasan Remaja Di Masa Pandemi Covid-19”. Window of Public Health Journal 4, no. 1 (February 28, 2023): 103–113. Accessed July 1, 2025. http://103.133.36.91/index.php/woph/article/view/554.