Ginting Munthe, Novita Br, and Mega Wati. 2022. “The Relationship Of Participation In Pregnancy Exercise With The Duration Of The Second Stage Of Labor In Primigravida”. JURNAL KEPERAWATAN DAN FISIOTERAPI (JKF) 5 (1):190-97. https://doi.org/10.35451/jkf.v5i1.1227.