Manglapus, R. S. (1991). The Philippines at the strategic center: Foreign policy for the 1990s. Department of Foreign Affairs.
Citace podle Chicago (17th ed.)Manglapus, Raul Sevilla. The Philippines at the Strategic Center: Foreign Policy for the 1990s. Manila: Department of Foreign Affairs, 1991.
Citace podle MLA (9th ed.)Manglapus, Raul Sevilla. The Philippines at the Strategic Center: Foreign Policy for the 1990s. Department of Foreign Affairs, 1991.
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