“CLASS EMPOWERMENT OF PREGNANT WOMEN ABOUT COUNTERPRESSURE EDUCATION AND BIRTH BALL FOR PAIN OF LABOR: CLASS EMPOWERMENT OF PREGNANT WOMEN ABOUT COUNTERPRESSURE EDUCATION AND BIRTH BALL FOR PAIN OF LABOR” (2022) JURNAL PENGMAS KESTRA (JPK), 2(2), pp. 145–147. doi:10.35451/jpk.v2i2.1313.