Bakar, R. M., Ayu, F., & 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), 121-142. Retrieved from https://jurnal.ugm.ac.id/v3/gamaijb/article/view/15803