Lambert, Viktória, és Irén Gyökér. „Increasing Employee Engagement through Branding Activities of Corporate Learning Leaders”. Marketing & Menedzsment 49, no. 4 (október 3, 2019): 64–78. Elérés december 17, 2025. https://journals.lib.pte.hu.testing.qulto.eu/index.php/mm/article/view/914.