Antzeko izenburuak: Encyclopaedia of modern educational research /
- Encyclopaedia of modern educational research : History of educational research /
- Encyclopaedia of modern educational research : Methods of educational research /
- World education encyclopaedia /
- Encyclopedia of modern educational research : vol. 9 research in educational and vocational guidance /
- Introduction to the foundations of education /
- Philosophy and education : alternatives in theory and practice /