Shah, Giriraj, author
Anmol Publications PVT. Ltd., 1999
Buku Referensi
Shah, Giraraj, author
Anmol Publications PVT. Ltd., 2000
Buku Referensi
Henham, Ralph J., 1949-, author
Avebury, 1990
Buku Teks
Jack Kitaeff, editor
Routledge, 2011
Buku Teks
Marshall, Geoffrey, author
Oxford University Press, 1957
Buku Teks