Olmos-Migueláñez, Susana, Fernando Martínez-Abad, Eva María Torrecilla-Sánchez, and Juanjo Mena-Marcos. 2014. “Psychometric Analysis of a Perception Scale on the Usefulness of Moodle in the University”. RELIEVE – Electronic Journal of Educational Research and Evaluation 20 (2). https://doi.org/10.7203/relieve.20.2.4221.