Massa, Kartini, et al. “Age and Parity With Baby Blues Syndrome in Postpartum Mothers at the Teling Community Health Center, Manado City”. Jurnal Keperawatan Profesional (KEPO), vol. 6, no. 2, Nov. 2025, pp. 321-8, doi:10.36590/kepo.v6i2.1750.