Baldoria, P. L. Principles and problems in Philippine foreign relations.
Lua i Stíl Chicago (17ú heag.)Baldoria, Pedro L. Principles and Problems in Philippine Foreign Relations.
Lua MLA (9ú heag.)Baldoria, Pedro L. Principles and Problems in Philippine Foreign Relations.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.