Gessler, Michael. “The Lack of Collaboration Between Companies and Schools in the German Dual Apprenticeship System: Historical Background and Recent Data”. International Journal for Research in Vocational Education and Training 4, no. 2 (August 25, 2017): 164–195. Accessed April 20, 2024. https://journals.sub.uni-hamburg.de/hup2/ijrvet/article/view/256.