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Nicolas Sarkozy Nicholas Winton Nicholas Hoult Nicholas xứ Cusa Nicholas McCarthy Nicholas Alexandrovich (Romanov) Nicholas Sparks Nicholas Roerich Nicholas Eden, Bá tước thứ 2 xứ Avon Nicolas FlamelTài liệu tham khảo
WikiPedia: Nicholas Alexandrovich (Romanov) http://www.inslav.ru/images/stories/pdf/2015_alman... https://books.google.com/books?id=HL1OSmANe2sC&q=w... https://www.academia.edu/24317635/_The_letters_abo... https://archive.org/stream/encyclopaediabri01chisr...