Hasanah, Miftahul, et al. “The Relation of Sleep Quality in Pregnant Mothers With The Incidence of Preeclampsia”. Jurnal Ners Dan Kebidanan (Journal of Ners and Midwifery), vol. 9, no. 2, Aug. 2022, pp. 196-04, doi:10.26699/jnk.v9i2.ART.p196-204.