Hollins, Carole, author
Blackwell Munksgaard, 2006
Buku Teks
Phiona Stanley and Greg Vass, editors
Routledge, 2018
Buku Teks
Boyd, William E., author
Prentice-Hall, 1955
Buku Teks
Leal, A.L.
Longman, 1978
Buku Teks
Monneret, Philippe
Presses Iniversitaires de France, 1999
Buku Teks