Wahyuni, I., Pramono, N., Suherni, T., & Widyawati, M. N. (2017). EFFECT OF PREGNANCY EXERCISE ON DURATION OF THE FIRST AND SECOND STAGE OF LABOR IN PRIMIGRAVIDA MOTHERS DURING THE THIRD TRIMESTER OF PREGNANCY. Belitung Nursing Journal, 3(6), 765–770. https://doi.org/10.33546/bnj.304