O. Soedirham and S. Patonah, “Analyzing Program Planning and Complications Prevention of Childbirth (P4k) in the Context of Social Capital”, IJSBAR, vol. 22, no. 2, pp. 16–26, May 2015, Accessed: Jan. 21, 2026. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3928