Gallardo KE, Valenzuela González JR. Assessment in the Use of Excel Competency for Problem Solving Using the Approach of Expert and Novice Theory. AJER [Internet]. 2015 Sep. 24 [cited 2024 Apr. 23];60(3):559-75. Available from: https://journalhosting.ucalgary.ca/index.php/ajer/article/view/56013