Purba AS, Panjaitan FA. PELATIHAN UMKM DALAM MENGEMBANGKAN PACKAGING USAHA IBU- IBU PKK di DEMAK SELATAN SURABAYA. SPM [Internet]. 2022Dec.1 [cited 2025Mar.15];1(02):569-74. Available from: https://conference.untag-sby.ac.id/index.php/spm/article/view/1733