Çelik, K., Çelik, O.T. and Kahraman, Ümit 2021. Teachers’ Informal Learning in The Context of Development: Resources, Barriers, And Motivation. Psycho-Educational Research Reviews. 10, 2 (Aug. 2021), 77–91. DOI:https://doi.org/10.52963/PERR_Biruni_V10.N2.05.