Andriyani, A. A. Ayu Dian, et al. “Gradation of Japanese Honorifics ‘Keigo’ As a Communication Strategy of Tourism Business Players in Bali”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 8, Oct. 2020, pp. 2327-39, https://doi.org/10.61841/6r93wa88.