Santiago, G. (2011). Tracing the roots and reasons of the common errors of students in college algebra. Saint Louis University Research Journal.
Citazione stile Chigago Style (17a edizione)Santiago, George. "Tracing the Roots and Reasons of the Common Errors of Students in College Algebra." Saint Louis University Research Journal 2011.
Citatione MLA (9a ed.)Santiago, George. "Tracing the Roots and Reasons of the Common Errors of Students in College Algebra." Saint Louis University Research Journal, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.