Yuvira Herninda, E., R. Rahmawati, and J. Aswan. “Strategic Approaches to Enhancing Employee Performance in Leadership Communication and Protocol Functions”. Journal Science Administration, Innovations, and Public Service Development, vol. 2, no. 1, Mar. 2024, pp. 86-103, https://journal.ubl.ac.id/index.php/j-administration/article/view/244.