Wulandari, Risa Ayu. “The Influence of Exclusive Breastfeeding Toward The Occurrence of Childhood Pneumonia in East Java”. Jurnal Berkala Epidemiologi 6, no. 3 (December 31, 2018): 236–243. Accessed August 3, 2024. https://e-journal.unair.ac.id/JBE/article/view/8563.