Huggins, Valerie and David Evans (eds.) 2018 Early Childhood Education and Care for Sustainability: International Perspectives. Routledge: New York.
Pojar, Jim and Andy Mackinnon, 1994 Plants of Coastal British Columbia including Washington, Oregon and Alaska. Lone Pine Publishing: Vancouver.
Warden, Claire 2019 Nature as Pedagogy: Education for Sustainability. In Childhood Education 95(6):6-13.