Philippines. (1971). National report of the Republic of the Philippines for the 1972 United Nations Conference on Human Environment. [s.n.].
Cita Chicago (17th ed.)Philippines. National Report of the Republic of the Philippines for the 1972 United Nations Conference on Human Environment. Manila: [s.n.], 1971.
Cita MLA (9th ed.)Philippines. National Report of the Republic of the Philippines for the 1972 United Nations Conference on Human Environment. [s.n.], 1971.
Atenció: Aquestes cites poden no estar 100% correctes.