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.
Chicagoスタイル(17版)引用形式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.
MLA(9版)引用形式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.
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