Surenne, Gabriel
Oliver and Boyd, [date of publication not identified]
Buku Referensi
West Publishing, 1989
Buku Referensi
West Publishing, 1985
Buku Referensi
Routledge, 1997
Buku Referensi
Selden, Raman, author
The University Press of Kentucky , 1993
Buku Teks