Mavropoulos, Azarias A, Aikaterini Sipitanou, and Anastasia Pampouri. “Training of Adult Trainers: Implementation and Evaluation of a Higher Education Program in Greece”. The International Review of Research in Open and Distributed Learning 20, no. 1 (February 28, 2019). Accessed March 19, 2024. https://www.irrodl.org/index.php/irrodl/article/view/4143.