SARPKAYA, Ruhi, Barış ÇAVUŞ, and Kadir YILMAZ. “The Involvement of Adults in Formal Education and Lifelong Learning Activities According to OECD Data: An Evaluation In the Light of OECD Education at a Glance 2017”. Psycho-Educational Research Reviews 7, no. 2 (September 1, 2018): 16 –. Accessed May 17, 2024. https://perrjournal.com/index.php/perrjournal/article/view/236.