Capítulo 3

1 - Brown, S. (2014). Why Playing is vital?, Stuart Brown: Why Playing is vital? • Plays-In-Business, Web 8.04.2022.

2- Brown, S. (2022). The 7 Properties of play, Dr Stuart Brown on The 7 Properties of Play | The Performatist, Web 8.04.2022.

3 - Brown, S. (2015). How Does Play Shape Our Development? Stuart Brown: How Does Play Shape Our Development? : NPR, Web 8.04.2022.

4 - Sullivan, K. (f. a.). The Importance of Play: 9 Scientific Reasons Adults Should Play More, The Importance of Play: 9 Scientific Reasons Adults Should Play More - TCK Publishing, Web 11.04.2022.

5 - European Youth Foundation. (2018). Gamification in non-formal education and youth work. . Web 17th of April, 2022.