Lange, A. (2012). SIMPLE: Sustainable integrated management and planning for local government ecosystems. GIZ.
Chicago-referens (17:e uppl.)Lange, Andreas. SIMPLE: Sustainable Integrated Management and Planning for Local Government Ecosystems. Manila: GIZ, 2012.
MLA-referens (9:e uppl.)Lange, Andreas. SIMPLE: Sustainable Integrated Management and Planning for Local Government Ecosystems. GIZ, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.