Rijsubo, Primawaty Dwi, et al. “Endorphin Massage Reduces Back Pain Intensity in Third-Trimester Pregnant Women at Rismana Pakpahan’s Practice”. Jurnal Keperawatan Priority, vol. 7, no. 2, July 2024, pp. 129-37, doi:10.34012/jukep.v7i2.5380.