Wati, Tri Suci Dewi, and Adina Fistabilarawi. “Description of Knowledge of Pregnant Women About Anemia in Batu Malenggang Village, Hinai District, Langkat Regency”. Science Midwifery, vol. 8, no. 2, April, Apr. 2020, pp. 135-41, doi:10.35335/midwifery.v9i1, Oktober.663.