Tudor, I. ., D. I. . PredeÈ›eanu, C. . Picu, and C. . State. “Volunteering As a Way of Taking Responsibility for the Sustainability of Social Economy Enterprises”. European Journal of Sustainable Development, vol. 9, no. 3, Oct. 2020, p. 267, doi:10.14207/ejsd.2020.v9n3p267.