United Nations Environment Programme. (1988). Guidelines for monitoring the quality of coastal recreational and shellfish growing areas. The Programme.
Citazione stile Chigago Style (17a edizione)United Nations Environment Programme. Guidelines for Monitoring the Quality of Coastal Recreational and Shellfish Growing Areas. Geneva: The Programme, 1988.
Citatione MLA (9a ed.)United Nations Environment Programme. Guidelines for Monitoring the Quality of Coastal Recreational and Shellfish Growing Areas. The Programme, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.