Romulo, C. P. (1971). In the mainstream of diplomacy. Office of Press and Public Affairs, Dept. of Foreign Affairs.
Lua i Stíl Chicago (17ú heag.)Romulo, Carlos Pena. In the Mainstream of Diplomacy. [Manila: Office of Press and Public Affairs, Dept. of Foreign Affairs, 1971.
Lua MLA (9ú heag.)Romulo, Carlos Pena. In the Mainstream of Diplomacy. Office of Press and Public Affairs, Dept. of Foreign Affairs, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.