I. B. S. Kusuma, V. H. M. Simanjuntak, P. P. A. Putra, N. W. P. N. Dewi, and K. A. Y. Padmaswari, “An Analysis of Employee Environmental Awareness in The Hospitality Industry”, IJEBIR, vol. 5, no. 04, pp. 3884-3899, Jul. 2026.