“Penguatan Peran Keluarga Dalam Pencegahan Masalah Gizi Balita Melalui Positive Deviance Di Kabupaten Deli Serdang”. TROPHICO 4, no. 2 (September 30, 2024): 69–75. Accessed February 4, 2026. https://idjpcr.usu.ac.id/trophico/article/view/17802.