1. Achtenhagen F: Prüfung von leistungsindikatoren für die berufsbildung sowie zur ausdifferenzierung beruflicher kompetenzprofile nach wissensarten. BMBF, Bonn; 2004.
2. Aldrich R: Vocational education in Britain: An historical and cultural analysis. In Vocational education and culture: European prospects from history and life history. Edited by: Heikkinen A. University of Tampere, Tampere, Finland; 1994.
3. Allan JK: Farmers as learners: evolving identity, disposition and mastery through diverse practices. Rural Sociol 2005, 15(1):4–21.
4. Anderson D: Successful reform: Reframing the national VET policy agenda. In Different drums one beat? Economic and social goals in education and training (pp 60–75). Edited by: Ferrier F, Anderson D. National Centre for Vocational Educational Research, Adelaide, Australia; 1998.
5. Aranya N, Polluck J, Amernic J: An examination of professional commitment in public accounting. Account Org S 1981, 6: 271–280.