Sulasdi, Nur Ain Desta, and Ismarwati. “The Effectiveness of Baby Massage on Sleep Duration for Infants Aged 1-12 Months”. Jurnal Penelitian Pendidikan IPA, vol. 9, no. 8, Aug. 2023, pp. 444-50, doi:10.29303/jppipa.v9i8.4797.