Yusmansyah EF, Martinis S, Sulyani AC, Nurhasanah H, Rivianto RDW. Measuring Internal Customer Satisfaction Using Net Promoter Score: Case Study on Digital Product. ijmst [Internet]. 2023Aug.8 [cited 2024Jul.22];10(2):3089-97. Available from: https://cosmosscholars.com/phms/index.php/ijmst/article/view/3053