Vare, Paul. “A Rounder Sense of Purpose: Developing and Assessing Competences for Educators of Sustainable Development”. Form@re - Open Journal per la formazione in rete 18, no. 2 (July 31, 2018): 164–173. Accessed December 2, 2024. https://oaj.fupress.net/index.php/formare/article/view/3755.