Ernawati, E., Handayani, T. P., Astari, R. Y., Ahmar, H., & Mauludiyah, I. (2022). Communication, information & education online-based assisted booklets in COVID-19 prevention: Study on maternals. International Journal of Health Sciences, 6(S1), 2957–2964. https://doi.org/10.53730/ijhs.v6nS1.5096