5Sarah Dewees and Lester M. Salamon, 2000:West Virginia Nonprofit Employment, Center for Civil Society Studies, Institute for Policy Studies, The Johns Hopkins University, Bulletin No. 2, April, 2000. 被引量：1
6Lester M. Salamon, 2001: The Third Sector and volunteering in Global Perspective, Presentation at the 17th Annual International Association of Volunteer Effort Conference, Amsterdam, The Netherlands, January 15,2001. 被引量：1
