Siregar, Srianty, 		Siregar, Ratna, AND 		Batubara, Novita.
" GAMBARAN PENGETAHUAN IBU HAMIL PRIMIGRAVIDA  TENTANG NYERI PERSALINAN KALA I" <em>Jurnal Kesehatan Ilmiah Indonesia (Indonesian Health Scientific Journal)</em> [Online], Volume 8 Number 1 (27 June 2023)