Alfen, Alfen, et al. “ANALISIS PENERAPAN SOP OLEH WAITER WAITERSS DI RESTORAN ANAMBAS BEVERLY HOTEL BATAM”. JURNAL MENATA, vol. 3, no. 1, Aug. 2024, pp. 9-18, https://jurnal.btp.ac.id/index.php/menata-btp/article/view/229.