Ambarita, H. F. R., and K. . Ulfah. “EFFECT OF DEEP BACK MASSAGE METHOD ON INTENSITY OF PAIN IN THE FIRST STAGE OF LABOR ”. Jurnal Kesehatan Siliwangi, vol. 2, no. 3, Apr. 2022, pp. 1041 -48, doi:10.34011/jks.v2i3.792.