Voinova, N.
Dicionario pratico Russo-Portugues
Enciclopedia Sovietica, 1964
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Aruuda, Ligia
Gramatica de Portugues
Porto Editora, 2004
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Whitlam, John
English-Portuguese = Portugues-Ingles Dictionary
HarperCollins, 2001
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Amor, Emillia
Didactica do Portugues : fundamentos e metodologia
Texti Editoris, 2006
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Kelleher, Victor
Em's story : a novel
University of Queensland, 1988.
 Buku Teks SO