http://mountainbikeworld.it/attualita/2016/02/09/corsi-di-formazione-trail-building-imba-a-meta-aprile/
Potrebbe anche interessarti
http://www.4actionsport.it/mtb/2016/01/05/40288/
https://www.imba-europe.org/news/il-ciocco-host-5th-italian-trail-building-school-1314-april
http://www.redbull.com/it/it/bike/stories/1331849431364/mtb-guida-pratica-ode-al-trail-building
25/02/2015 – MTB MAG – http://www.mtb-mag.com/imba-italia-corso-di-trailbuilding/