Lina, Anastasia, and Anjelina Sera. 2026. “The Effect of The Use of Pregnancy Danger Signs Booklet on Mothers’ Knowledge at Public Health Center X: Anastasia Lina, Anjelina Sera”. Jurnal Persada Husada Indonesia 13 (1):1-8. https://doi.org/10.56014/jphi.v13i1.471.