Integrated Environmental Management for Sustainable Development Programme. (1998). Strategic environmental plan of Quezon province. IEMSDP.
Chicago-referens (17:e uppl.)Integrated Environmental Management for Sustainable Development Programme. Strategic Environmental Plan of Quezon Province. Quezon City: IEMSDP, 1998.
MLA-referens (9:e uppl.)Integrated Environmental Management for Sustainable Development Programme. Strategic Environmental Plan of Quezon Province. IEMSDP, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.