Wurfel, D. Philippine foreign policy.
Lua i Stíl Chicago (17ú heag.)Wurfel, David. Philippine Foreign Policy.
Lua MLA (9ú heag.)Wurfel, David. Philippine Foreign Policy.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)