LIU, G. (2005). The Singapore foreign service: The first 40 years. Editions Didier Millet.
Čikaški stil citiranja (17. izdanje)LIU, Gretchen. The Singapore Foreign Service: The First 40 Years. Editions Didier Millet, 2005.
MLA način citiranja (9. izdanje)LIU, Gretchen. The Singapore Foreign Service: The First 40 Years. Editions Didier Millet, 2005.
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