Ernawati, Ernawati, Titi Purwitasari Handayani, Ruri Yuni Astari, Hamdiah Ahmar, and Indah Mauludiyah. “Communication, Information & Education Online-Based Assisted Booklets in COVID-19 Prevention: Study on Maternals”. International journal of health sciences 6, no. S1 (April 2, 2022): 2957–2964. Accessed August 16, 2024. https://sciencescholar.us/journal/index.php/ijhs/article/view/5096.