Lange, A. (2012). SIMPLE: Sustainable integrated management and planning for local government ecosystems. GIZ.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLange, Andreas. SIMPLE: Sustainable Integrated Management and Planning for Local Government Ecosystems. Manila: GIZ, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLange, Andreas. SIMPLE: Sustainable Integrated Management and Planning for Local Government Ecosystems. GIZ, 2012.
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