Ulpah, A., U. Narimawati, dan N. Nurdin. “ANALISIS STRATEGI ENDGAME POLIO BERDASARKAN SURVEILANS ACUTE FLACCID PARALYSIS (AFP)”. Ekono Insentif, Vol. 15, no. 2, Oct. 2021, hlm. 109-21, doi:https://doi.org/10.36787/jei.v15i2.699.