Tzidimopoulou, Vasiliki, and Penelope Anastasiadou. “The Role of Foreign Language Education in Human Capital Formation: A Narrative Literature Review”. European Scientific Journal, ESJ 22, no. 20 (July 31, 2026): 119. Accessed August 20, 2026. https://eujournal.org/index.php/esj/article/view/21339.