Não informado. (1957). Higher education and research in the Netherlands. Netherlands Universities Foundation for International Cooperation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Higher Education and Research in the Netherlands. The Hague, Holanda: Netherlands Universities Foundation for International Cooperation, 1957.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Higher Education and Research in the Netherlands. Netherlands Universities Foundation for International Cooperation, 1957.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.