Pendampingan Pemasaran Bisnis Katering Ibu-ibu PKK melalui Pemanfaatan Digital Marketing melaui Aplikasi WhatsApp Business di Dusun Petiyin Solokuro Lamongan. Opportunity Journal 2023, 1 (2), 77-84. https://doi.org/10.55352/oppotunity.v1i2.780.