Teha, Z. D. C., U. R. Budihastuti, and H. Prasetya. “The Effectiveness of Lavender Aroma Therapy for Better Quality of Sleep in Pregnant Women: Meta-Analysis”. Journal of Maternal and Child Health, vol. 7, no. 4, July 2022, pp. 454-6, doi:10.26911/thejmch.2022.07.04.09.