Saragih, Elvira Inggrid Rodearni, Elida Florentina Sinaga Simanjorang, and Yuniman Zebua. “The Influence of Interpersonal Skills, Salesmanship Skills, and Work Environment on Medical Representative Performance”. Almana : Jurnal Manajemen dan Bisnis 7, no. 3 (December 28, 2023): 431–439. Accessed December 2, 2025. https://journalfeb.unla.ac.id/index.php/almana/article/view/2168.