Long, A. A., author
Claaarendon Press, 2004
Buku Teks
Vaughn, Lewis, author
Oxford , 2006
Buku Teks
Lourenco, Eduardo, author
Gradiva, 2006
Buku Referensi
Vaughn, Lewis, author
Oxford University Press, 2005
Buku Teks
Geymonat, Lidovico
Aldo Garzanti, 1976
Buku Teks