Tirta Danu, S. ., Kuswandi, and B. . Subiantoro. “Strategi Bisnis Coffee Shop ‘Nordic’ Pada Kondisi Pasar Uncertainly Di Surabaya”. AMMA : Jurnal Pengabdian Masyarakat, vol. 3, no. 6 : Juli, July 2024, pp. 483-8, https://journal.mediapublikasi.id/index.php/amma/article/view/4368.