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.
Citazione stile Chigago Style (17a edizione)United Nations Centre for Regional Development, United Nations Environment Programme, e 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.
Citatione MLA (9a ed.)United Nations Centre for Regional Development, et al. Environmental Management for Local and Regional Development. United Nations Centre for Regional Development, 1987.