– Buil, P.; Roger-Loppacher, O.; Tintoré, M. Creating the Habit of Recycling in Early Childhood: A Sustainable Practice in Spain. Sustainability 2019, 11, 6393.https://www.mdpi.com/2071-1050/11/22/6393
– Buil, P.; Roger-Loppacher, O.; Tintoré, M. Creating the Habit of Recycling in Early Childhood: A Sustainable Practice in Spain. Sustainability 2019, 11, 6393.https://www.mdpi.com/2071-1050/11/22/6393