Herdiana Abdurrahman, Nana. “The Effect of Interpersonal Communication Skills and Work Motivation on Performance of Marketing Employee”. International Journal of Engineering and Technology 7, no. 2.29 (May 22, 2018): 190–195. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/13314.