Retnawati BB, Nuryakin N. Developing Salesperson Performance: The Role of Customer Encountering Competence Portfolio, Relational Capital and Service Excellent Customer Heterogeneity. IRMM [Internet]. 2016 Oct. 25 [cited 2024 Apr. 28];6(4):891-7. Available from: https://www.econjournals.com/index.php/irmm/article/view/3093