Hapsari Pratiwi, Nur Asia, Sri Achadi Nugraheni, and Apoina Kartini. 2019. “Managing Early Detectionof Mothers With High-Risk Pregnancy by Health Surveillance Workers for Maternal and Child Health in Declining Maternal Mortality in Semarang City”. International Journal of English Literature and Social Sciences (IJELS) 4 (4). https://journal-repository.com/index.php/ijels/article/view/278.