S. Subriah, Z. A. Amdadi, A. W. Arianggara, S. N. Fajriah, I. Iskandar, and J. Jumrah, “Feasibility analysis of endorphin massage module as an effort to increase breast milk production in puerperal mothers”, ijhms, vol. 5, no. 4, pp. 342-350, Nov. 2022.