Fergusson, R. (2004). The Penguin thesaurus. London: Penguin Reference.
Trích dẫn kiểu ChicagoFergusson, Rosalind. The Penguin Thesaurus. London: Penguin Reference, 2004.
MLA citiranjeFergusson, Rosalind. The Penguin Thesaurus. London: Penguin Reference, 2004.
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