Childers, E. (2003). The riddle of the sands. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoChilders, Erskine. The Riddle of the Sands. Oxford: Oxford University Press, 2003.
MLA CitationChilders, Erskine. The Riddle of the Sands. Oxford: Oxford University Press, 2003.
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