Serrao, Vitor, author
Edicoes Colibri, 2000
Buku Teks
Goncalves, Rui Mario, author
Instituto de Cultura e Lingua Portuguesa, 1991
Buku Teks
Serrao, Vitor, author
Instituto de Cultura e Lingua Portuguesa, 1991
Buku Teks
Lourenco, Eduardo, author
Gradiva, 2007
Buku Referensi
Barreto, Luis Filipe
Imprensa Nacional-Casa da Moeda, 1988
Buku Teks