Bakar, R. M., Ayu, F. and Nadjamuddin, L. (2023) “Is Service with a Smile Enough to Satisfy Customers? Sincere and Insincere Smiles via Video and Vignette”, Gadjah Mada International Journal of Business, 25(2), pp. 121-142. Available at: https://journal.ugm.ac.id/v3/gamaijb/article/view/15803 (Accessed: 27November2024).