Gaudio, G. del, C. N. Refugio, I. Jurcic, V. D. Corte, D. F. James, M. M. T. Said, B. Sawicka, T. R. Mohan, V. R. Aravind, K. Umachandran, and P. Amuthalakshmi. “Designing Learning-Skills towards Industry 4.0”. World Journal on Educational Technology: Current Issues, vol. 11, no. 2, Apr. 2019, pp. 150-61, doi:10.18844/wjet.v11i2.4147.