Yilmaz, G. G., and B. Kiran Esen. “Examination of Toy Preferences – Play Skills and Aggression Tendencies of 60–72-Month-Old Children”. 2020. New Trends and Issues Proceedings on Humanities and Social Sciences, vol. 7, no. 3, Mar. 2017, pp. 252-61, doi:10.18844/prosoc.v7i3.5259.