Suwoto, A. D., and A. Sjamsudin. “STRATEGI PEMASARAN MAKANAN RINGAN DI MASA PANDEMI MELALUI SOSIAL MEDIA INSTAGRAM STUD I KASUS : OUTLET DONUTDAY BOYOLANGU, TULUNGAGUNG”. ICO EDUSHA, vol. 2, no. 1, Jan. 2022, pp. 663-9, https://prosiding.stainim.ac.id/index.php/prd/article/view/149.