Antonio, R. F. (2025). Int'l cooperation vital in addressing maritime challenges - DFA chief. Manila Bulletin.
Chicago-viite (17. p.)Antonio, Raymund F. "Int'l Cooperation Vital in Addressing Maritime Challenges - DFA Chief." Manila Bulletin 2025.
MLA-viite (9. p.)Antonio, Raymund F. "Int'l Cooperation Vital in Addressing Maritime Challenges - DFA Chief." Manila Bulletin, 2025.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.