Omer, B. K., and F. G. Abdul wahid Alshammari. “Gregoric’s Thinking Styles Among Middle School Students and Its Relationship to Some Variables”. Journal of Tikrit University for Humanities, vol. 30, no. 3, 2, Mar. 2023, pp. 216-38, doi:10.25130/jtuh.30.3.2.2023.13.