edited by Robert Burchfield
Cambridge University Press, 1994
Buku Referensi
edited by Boris Ford
Cambridge University , 1992
Buku Teks
Gregg, Pauline
George G. Harrap, 1952
Buku Teks
Cambridge University Press, 2017
Buku Teks
Wheeler, Mortimer, Sir
The Syndics of the Cambridge University Press, 1960
Buku Teks