United Nations Centre for Regional Development, United Nations Environment Programme, & International Workshop on Environmental Management for Local and Regional Development. (1987). Environmental management for local and regional development. United Nations Centre for Regional Development.
Chicago-referens (17:e uppl.)United Nations Centre for Regional Development, United Nations Environment Programme, och International Workshop on Environmental Management for Local and Regional Development. Environmental Management for Local and Regional Development. Nagoya, Japan: United Nations Centre for Regional Development, 1987.
MLA-referens (9:e uppl.)United Nations Centre for Regional Development, et al. Environmental Management for Local and Regional Development. United Nations Centre for Regional Development, 1987.