Ina Namora Putri Siregar, Suryani. Efforts to Improve Employee Performance Through Communication And Leadership Style In PT J&T Express Medan. International Journal of Science, Technology & Management [Internet]. 2021 Jul. 25 [cited 2025 Dec. 24];2(4):1367-70. Available from: https://www.ijstm.inarah.co.id/index.php/ijstm/article/view/187