Pendampingan Pemasaran Bisnis Katering Ibu-ibu PKK melalui Pemanfaatan Digital Marketing melaui Aplikasi WhatsApp Business di Dusun Petiyin Solokuro Lamongan. Opportunity Journal [Internet]. 2023 Dec. 31 [cited 2026 Oct. 4];1(2):77-84. Available from: https://ejournal.unsuda.ac.id/index.php/Opportunity/article/view/780