2James Allen Smith,The Evolving American Foundation,Philanthropy and the Nonprofit Sector in a Changing America,Indiana University Press,1999:37,37,38.
5Stefan Toepler,"Operating in a grantmaking world:reassessing the role of operating foundations".Helmut K.Anheier,Stefan Toepler,eds.Private funds,public purpose:philanthropic foundations in international perspective,(New York.Plenum Publishers.1999.
