Stevenson M. An Optimist Tour of the Future. – Profile Books, 2012. – Прим. авт.
20
Why I protest: Olmo Glavez of Spain // Time Magazine. – 26 December 2011. – Прим. авт.
21
World of Music, Arts and Dance – мир музыки, искусств и танца. – Прим. ред.
22
Evaluation of Evidence-Based Practices in Online Learning: A Meta-Analysis and Review of Online Learning Studies. – US Dept. of Education. – May 2009. – Прим. авт.
