UNESCO Institute for Lifelong Learning (UIL) (Germany), Yang, J., & Valdes-Cotera, R. (2011). Conceptual evolution and policy developments in lifelong learning. UNESCO Institute for Lifelong Learning (UIL).
Παραπομπή σε μορφή Chicago (17η εκδ.)UNESCO Institute for Lifelong Learning (UIL) (Germany), Jin Yang, και Raul Valdes-Cotera. Conceptual Evolution and Policy Developments in Lifelong Learning. Hamburg, Germany: UNESCO Institute for Lifelong Learning (UIL), 2011.
Παραπομπή σε μορφή MLA (8th εκδ.)UNESCO Institute for Lifelong Learning (UIL) (Germany), et al. Conceptual Evolution and Policy Developments in Lifelong Learning. UNESCO Institute for Lifelong Learning (UIL), 2011.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.