Maverin, Kelvin, Juliana Mega, Ester Rawina, and Hendry. 2021. “The Influence Of Leadership, Work Environment And Motivation And Employee Career Development On Work Achievement In PT. Medisafe Technologies”. Jurnal Mantik 5 (1):325-30. https://www.iocscience.org/ejournal/index.php/mantik/article/view/1338.