Supatmi, Supatmi, Intan Permatasari, Fathiya Luthfil Yumni, y Aryunani Aryunani. 2022. «The Effect of Yophytta Exercise for Shortening the Second Stage of Labour in Primigravidas». Gaceta Médica De Caracas 130 (1 S):S119-S124. http://saber.ucv.ve/ojs/index.php/rev_gmc/article/view/23894.