1. Research2guidance. 325,000 Mobile Health Apps Available in 2017—Android Now the Leading mHealth Platform; 2017. https://research2guidance.com/325000-mobile-health-apps-available-in-2017/. Accessed January 10, 2019.
2. Além Do Jardim de Infância: Temas de Educação Online;Muito,2005
3. Three generations of distance education pedagogy;Anderson;Int Rev Res Open Dist Learn,2011
4. Kafer P.R., Mikuski J.C.. E-Book Princípios Da Andragogia Para Facilitadores: Em Pdf; 2014. http://www.mkaplus.com.br/blog/andragogia/andragogia. Accessed March 21, 2019.