United Nations Environment Programme. (2007). Life cycle management: A business guide to sustainability. UNEP.
Citazione stile Chigago Style (17a edizione)United Nations Environment Programme. Life Cycle Management: A Business Guide to Sustainability. Nairobi, Kenya: UNEP, 2007.
Citatione MLA (9a ed.)United Nations Environment Programme. Life Cycle Management: A Business Guide to Sustainability. UNEP, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.