Romulo, C. P. The U.N. as it is today.
Chicago-viite (17. p.)Romulo, Carlos P. The U.N. as It Is Today.
MLA-viite (9. p.)Romulo, Carlos P. The U.N. as It Is Today.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.
APA-viite (7. p.)