Steingass, F., author
Gaurav Publishing House, 1986
Buku Referensi
Spiro, Socrates, bey, 1868-, compiler
Elias Modern Press, 1929
Buku Referensi
Murphy, Raymond, author
Cambridge University Press, 1998
Buku Teks
Smith, B.T. Knight, author
J.M. Dent & Sons, 1948
Buku Teks
Hewings, Martin, author
Cambridge University Press, 2005
Buku Teks