Romulo, C. P. (1978). The Philippines in the world today. Dept. of Foreign Affairs.
Chicago Style (17. basım) AtıfRomulo, Carlos Pena. The Philippines in the World Today. Manila: Dept. of Foreign Affairs, 1978.
MLA (9th ed.) AtıfRomulo, Carlos Pena. The Philippines in the World Today. Dept. of Foreign Affairs, 1978.
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