Approtech Asia and Wahana Lingkungan Hidup Indonesia (WALHI). (1989). Environment and development conference report: Puncak Pass, West Java, Indonesia, March 28-30, 1989. [Coordination in Development?].
Chicago-referens (17:e uppl.)Approtech Asia and Wahana Lingkungan Hidup Indonesia (WALHI). Environment and Development Conference Report: Puncak Pass, West Java, Indonesia, March 28-30, 1989. [New York?]: [Coordination in Development?], 1989.
MLA-referens (8:e uppl.)Approtech Asia and Wahana Lingkungan Hidup Indonesia (WALHI). Environment and Development Conference Report: Puncak Pass, West Java, Indonesia, March 28-30, 1989. [Coordination in Development?], 1989.
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