Phuthi, Nduduzo, Krishan Lall Kumar, and Olefile Bethuel Molwane. “A Quasi-Linear Model Of Design Cognition”. Journal of College Teaching & Learning (TLC) 7, no. 11 (November 15, 2010). Accessed December 16, 2019. https://clutejournals.com/index.php/TLC/article/view/246.