Bergstrom, Magnus
Editorial Notícias, [1984?]
Buku Teks
Porto Editora, 2006
Buku Referensi
Rogério Akiti Dezem
Graduate School of Language and Culture, Osaka University, 2018
Artikel Jurnal
Branco, António
Springer, 2012
eBooks
Porto Editora, 2000
Buku Teks