1. ^{{Cite book|title=Xerte – A User-Friendly Tool for Creating Accessible Learning Objects|last=Ball|first=Simon|last2=Tenney|first2=Julian|date=2008-07-09|publisher=Springer Berlin Heidelberg|isbn=9783540705390|editor-last=Miesenberger|editor-first=Klaus|series=Lecture Notes in Computer Science|pages=291–294|language=en|doi=10.1007/978-3-540-70540-6_43|editor-last2=Klaus|editor-first2=Joachim|editor-last3=Zagler|editor-first3=Wolfgang|editor-last4=Karshmer|editor-first4=Arthur}}
2. ^{{Cite journal|last=Williams|first=Maggie|last2=Williams|first2=Peter|last3=Boyle|first3=Alan P.|year=2015|title=Development of an Online Field Safety Open Educational Resource using Xerte|journal=Planet|pages=1–11|doi=10.11120/plan.2014.00007}}
3. ^{{Cite journal|last=Hetrick|first=Tony|date=2011-11-25|title=ICT International: An Overview of Free Course Authoring Tools|journal=TechTrends|language=en|volume=55|issue=6|pages=11–12|doi=10.1007/s11528-011-0535-3|issn=8756-3894}}