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.
Cita Chicago (17th ed.)United Nations Centre for Regional Development, United Nations Environment Programme, i 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.
Cita MLA (9th ed.)United Nations Centre for Regional Development, et al. Environmental Management for Local and Regional Development. United Nations Centre for Regional Development, 1987.