(1975). Reflections on lifelong education and the school: Brief papers and notes containing some thoughts on the theory and application of lifelong education as seen in the context of school curriculum, adult education and similar areas. Inst. für Pädagogik.
Chicago-Zitierstil (17. Ausg.)Reflections on Lifelong Education and the School: Brief Papers and Notes Containing Some Thoughts on the Theory and Application of Lifelong Education as Seen in the Context of School Curriculum, Adult Education and Similar Areas. Hamburg: Inst. für Pädagogik, 1975.
MLA-Zitierstil (9. Ausg.)Reflections on Lifelong Education and the School: Brief Papers and Notes Containing Some Thoughts on the Theory and Application of Lifelong Education as Seen in the Context of School Curriculum, Adult Education and Similar Areas. Inst. für Pädagogik, 1975.