ICERI 2019 [elektronický zdroj] : international conference of education, research and innovation, November 11th-13th, 2019 - Seville, Spain / zost. L. Gómez Chova, A. López Martínez, Candel I Torres. Valencia : IATED, 2019. 1 USB kľúč (11710 s). ISBN 978-84-09-14755-7.