1.
Robayo LG, AvendaƱo AR. Exploring the principles of construct and content validity presented in the tests of the textbook english unlimited. ENLE.JOU [Internet]. 2014 Jun. 13 [cited 2024 Mar. 28];(5). Available from: https://revistas.uptc.edu.co/index.php/enletawa_journal/article/view/2576