Johnson, Matthew, author
Wiley-Blackwell, 2010
Buku Teks
Trigger, Bruce G., author
Cambridge University Press, 1989
Buku Teks
Neustupny, Evzen
Cambridge University Press , 1993
Buku Teks
edited by Linda Ellis
Garland Publishing, 1999
Buku Referensi
Krom, N.J., author
Gian Publishing House, 1986
Buku Referensi