Style de citation APA (7e éd.)

Romulo, C. P. (1978). The Philippines in the world today. Dept. of Foreign Affairs.

Style de citation Chicago (17e éd.)

Romulo, Carlos Pena. The Philippines in the World Today. Manila: Dept. of Foreign Affairs, 1978.

Style de citation MLA (9e éd.)

Romulo, Carlos Pena. The Philippines in the World Today. Dept. of Foreign Affairs, 1978.