Pitri, Z., K. Lubis, and D. H. “Factors Associated With Early Complementary Feeding in Infants Before 6 Months of Age”. JURNAL IBU DAN ANAK, Vol. 12, no. 1, May 2024, pp. 6-15, https://jurnal.pkr.ac.id/index.php/JIA/article/view/887.