Payoyo, P. B. (1985). The role of private and voluntary organizations in U.S. foreign policy. International Studies Institute of the Philippines.
Citace podle Chicago (17th ed.)Payoyo, Peter B. The Role of Private and Voluntary Organizations in U.S. Foreign Policy. Quezon City: International Studies Institute of the Philippines, 1985.
Citace podle MLA (9th ed.)Payoyo, Peter B. The Role of Private and Voluntary Organizations in U.S. Foreign Policy. International Studies Institute of the Philippines, 1985.
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