Othniel R, Maria Ritonga R. Peran Guest Relation Terhadap Pertumbuhan Penjualan (Studi Kasus Bi Coffee Sarua Baru Ciputat). Jurnal sostech [Internet]. 2023Jul.17 [cited 2024Dec.27];3(7):593-9. Available from: https://sostech.greenvest.co.id/index.php/sostech/article/view/872