Philippines. Environmental Management Bureau. (1992). Response to the earth summit: Implementing the Philippine agenda 21 for sustainable development : conference report, 31 August - 01 September 1992, Hyatt Regency, Manila. DENR.
Citazione stile Chigago Style (17a edizione)Philippines. Environmental Management Bureau. Response to the Earth Summit: Implementing the Philippine Agenda 21 for Sustainable Development : Conference Report, 31 August - 01 September 1992, Hyatt Regency, Manila. [Quezon City: DENR, 1992.
Citatione MLA (9a ed.)Philippines. Environmental Management Bureau. Response to the Earth Summit: Implementing the Philippine Agenda 21 for Sustainable Development : Conference Report, 31 August - 01 September 1992, Hyatt Regency, Manila. DENR, 1992.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.