Brehier, E.
Presses Universitaires de France, 1950
Buku Teks
Lourenco, Eduardo, author
Gradiva, 2006
Buku Referensi
coordenacao de Antonio Reis
Instituto Camoes, Circulo de Leitores, Temas & Debates, 2007
Buku Referensi
Piccard, E.
Editions Victor Attinger, [1963]
Buku Teks
Nijs, E. Breton de
University of Massachusetts Press, 1982
Buku Teks