Carney, Edward
Routledge,, 1997
Buku Teks
Van Dale Lexicografie, 1990
Buku Referensi
HarperCollins Publishers, 1993
Buku Referensi
Burt, Angela, author
Stanley Thornes, 1995
Buku Referensi
Bolander, Donald O., author
Lexicon Publication, 1993
Buku Referensi