Susi Marta Tambunan, Riza Afni, and Rianto Manurung. “Implementation Of Green Human Resource Management To Improve Sustainable Performance In The Hotel And Tourism Industry In Medan City”. Jurnal Ekonomi 13, no. 04 (December 31, 2024): 1494–1507. Accessed May 24, 2025. https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/6246.