United States. Agency for International Development. (1971). U.S. AID: Development assistance to the Republic of the Philippines, fiscal year 1971. USAID Philippines.
Lua i Stíl Chicago (17ú heag.)United States. Agency for International Development. U.S. AID: Development Assistance to the Republic of the Philippines, Fiscal Year 1971. Manila: USAID Philippines, 1971.
Lua MLA (9ú heag.)United States. Agency for International Development. U.S. AID: Development Assistance to the Republic of the Philippines, Fiscal Year 1971. USAID Philippines, 1971.
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