1
Izdano: c2009.
Superior document: Philanthropic and nonprofit studies
2
Izdano: 1996
3
Izdano: 2008
Superior document: Bulletin of the German Historical Institute : Supplement 5
4
Izdano: c2004.
Superior document: Philanthropic and nonprofit studies
Links: Polni tekst
5
Izdano: c2006.
Superior document: The Walter Prescott Webb memorial lectures ; 36
Links: Polni tekst