Mutmainun, Ayu, and Nuli Zulala. 2026. “The Relationship Between Maternal Knowledge Level and the Growth and Development of Infants Aged 6–12 Months at Gondokusuman I Public Health Center, Yogyakarta City”. Journal Hygeia Public Health 4 (4), 361-70. https://doi.org/10.37676/jhph.v4i4.12753.