UNESCO Institute for Education & All-European Conference for Directors of National Research Institutions in Education. (1977). Educational research in europe: First all-european conference for directors of national research institutions in education, Hamburg, 26-29 April, 1976. Sweets & Zeitlinger.
Citazione stile Chigago Style (17a edizione)UNESCO Institute for Education e All-European Conference for Directors of National Research Institutions in Education. Educational Research in Europe: First All-european Conference for Directors of National Research Institutions in Education, Hamburg, 26-29 April, 1976. Amsterdam ; Lisse: Sweets & Zeitlinger, 1977.
Citatione MLA (9a ed.)UNESCO Institute for Education e All-European Conference for Directors of National Research Institutions in Education. Educational Research in Europe: First All-european Conference for Directors of National Research Institutions in Education, Hamburg, 26-29 April, 1976. Sweets & Zeitlinger, 1977.