R. A. M. Molina and E. A. Menor, “Perceptions and Challenges of Learning Facilitators in the Implementation of Modular Printed Learning: Bases for an Action Plan”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 7, no. 10, pp. 4609–4639, Oct. 2026, doi: 10.11594/ijmaber.07.10.26.