Saputra, I Nyoman Gede Agus Jaya, dkk. “Exploring Service Excellence Training: Developing the Professional Competence of Waitstaff at Small-Scale Restaurants in Bali”. SIGn Journal of Social Science, vol. 6, no. 2, Mei 2026, hlm. 526-44, https://doi.org/10.37276/sjss.v6i2.696.