Daintith, Terence
Walter de Gruyter, 1987
Buku Teks
Daintith, Terence
Walter de Gruyter, 1987
Buku Teks
Ross, Stephen F., author
The Foundation Press, 1993
Buku Teks
Williams, Ethel L.
Scholarly Resources Press, 1977
Buku Referensi
Williams, Stephen, author
Routledge , 1995
Buku Teks