International Registry of World Citizens. (2001). Register van Wereldburgers: Nieuwsbrief. Hove: International Registry of World Citizens.
Cita Chicago Style (17a ed.)International Registry of World Citizens. Register Van Wereldburgers: Nieuwsbrief. Hove: International Registry of World Citizens, 2001.
Cita MLA (8a ed.)International Registry of World Citizens. Register Van Wereldburgers: Nieuwsbrief. Hove: International Registry of World Citizens, 2001.
Precaución: Estas citas no son 100% exactas.