Etania, Dita Listya, et al. “Strategi Promosi Penjualan Untuk Bertahan Pada Masa Pandemi Covid-19 (Studi Pada Avenzel Hotel & Convention)”. Innovative: Journal Of Social Science Research, vol. 3, no. 4, Aug. 2023, pp. 2423-37, http://j-innovative.org/index.php/Innovative/article/view/3399.