North Parade Publishing, 2019
Buku Referensi
Miller, William Ian
Cambridge University Press, 2006
Buku Teks
Cats, Jacob
Bigot & Van Rossum N. V., [date of publication not identified]
Buku Teks
edited by Andrew Blake and Tom Troscianko
Wiley, 1990
Buku Teks
Sneden, Private Robert Knox
The Free Press, 2000
Buku Teks