https://www.ekome.media/el/download_files/to-mathima-paichnidi-ekpaideftikos-odigos/
http://repository.library.teiwest.gr/xmlui/handle/123456789/9256
https://ir.lib.uth.gr/xmlui/bitstream/handle/11615/57108/23393.pdf?sequence=1
https://www.didaktorika.gr/eadd/handle/10442/29103
http://Serious games examples that explain all you need to know (game-learn.com)
http://Kallipos: Νέες Τάσεις και Προοπτικές στην Διαδικτυακή Εκπαίδευση
https://ikee.lib.auth.gr/record/288136/files/Ioannou1917-Gamification.pdf
