Mas Ulfa N, Syukrianto, Darmawan R. EDUKASI MELALUI MEDIA BOOKLET PADA ANGGOTA POSYANDU LANSIA DALAM PENINGKATAN SISTEM IMUNITAS TUBUH PASCA PANDEMI COVID -19 . japin [Internet]. 2023 Aug. 2 [cited 2024 Dec. 22];3(01). Available from: https://jkfn.akfaryarsiptk.ac.id/index.php/japin/article/view/87