Manglapus, R. S. (1991). The Philippines at the strategic center: Foreign policy for the 1990s. Department of Foreign Affairs.
Chicago Style aipamenaManglapus, Raul Sevilla. The Philippines at the Strategic Center: Foreign Policy for the 1990s. Manila: Department of Foreign Affairs, 1991.
MLA aipamenaManglapus, Raul Sevilla. The Philippines at the Strategic Center: Foreign Policy for the 1990s. Department of Foreign Affairs, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.