1. Global Status Report on Noncommunicable Diseaseshttp://apps.who.int/iris/bitstream/10665/148114/1/9789241564854_eng.pdf?ua=1
2. Draft WHO Global Action Plan on Physical Activity 2018–2030http://www.who.int/ncds/governance/gappa_version_4August2017.pdf
3. Council Recommendation of 26 November 2013 on Promoting Health-Enhancing Physical Activity across Sectors. Official Journal of the European Unionhttp://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=OJ:C:2013:354:FULL&from=EN
4. Correlates of physical activity: why are some people physically active and others not?
5. Ecological models: Application to physical activity;Ding,2013