Philippines. Department of Environment and Natural Resources. Integrated Environmental Management for Sustainable Development Programme. (1999). Sustainable development trainer's manual. DENR-IEMSD.
Citazione stile Chigago Style (17a edizione)Philippines. Department of Environment and Natural Resources. Integrated Environmental Management for Sustainable Development Programme. Sustainable Development Trainer's Manual. Quezon City: DENR-IEMSD, 1999.
Citatione MLA (9a ed.)Philippines. Department of Environment and Natural Resources. Integrated Environmental Management for Sustainable Development Programme. Sustainable Development Trainer's Manual. DENR-IEMSD, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.