Tait A. The Open University Of The United Kingdom: The First 50 Years. In: Perspectives on education without barriers or limits: A tribute to the Master Lorenzo García Aretio [Internet]. Colombia,CO: Sello Editorial UNAD; 2021 [cited 2026 Nov. 2]. (Institutional). Available from: https://libros.unad.edu.co/index.php/selloeditorial/catalog/book/109/chapter/989