Panuntun, S., R. Karsidi, B. Murti, and M. Akhyar. “Social Capital Role on Pregnant Woman Health in Klaten, Central Java”. Journal of Health Policy and Management, vol. 4, no. 1, Jan. 2019, pp. 59-66, https://thejhpm.com/index.php/thejhpm/article/view/85.