Letts, C. W. (1999). High performance nonprofit organizations: Managing upstream for greater impact. John wiley and sons.
Chicago-referens (17:e uppl.)Letts, Chtistine W. High Performance Nonprofit Organizations: Managing Upstream for Greater Impact. New York: John wiley and sons, 1999.
MLA-referens (9:e uppl.)Letts, Chtistine W. High Performance Nonprofit Organizations: Managing Upstream for Greater Impact. John wiley and sons, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.