Ariyanti, R., I. Yulianti, and R. Padlilah. “Birth Place Preference and Birth Attendant Selection During Covid-19 Pandemic in Tarakan City, North Kalimantan”. Journal of Maternal and Child Health, vol. 6, no. 1, Jan. 2021, pp. 122-30, https://thejmch.com/index.php/thejmch/article/view/550.