Oxford University Press, 1996
Buku Referensi
Wheeler, Marcus
Glarendon Press, 1984
Buku Referensi
edited by P. S. Falla
Clarendon Press, 1990
Buku Referensi
Russian-English, edited by Marcus Wheeler and Boris Unbegaun; English-Russian, edited by Paul Falla; revised and updated by Della Thompson
Oxford University Press, 2007
Buku Referensi
Wade, Terence
New York : Oxford University Press, 2002
Buku Referensi