Voinova, N.
Dicionario pratico Russo-Portugues
Enciclopedia Sovietica, 1964
Buku Referensi
Aruuda, Ligia
Gramatica de Portugues
Porto Editora, 2004
Buku Teks
Whitlam, John
English-Portuguese = Portugues-Ingles Dictionary
Harper Collins, 2001
Buku Referensi
Amor, Emillia
Didactica do Portugues : fundamentos e metodologia
Texti Editoris, 2006
Buku Teks
Young, E.M.
World hunger / E.M. Young
Routledge , 1997
Buku Teks