Allen, Edward, author
Oxford University Press, 2005
Buku Teks
Ching, Francis D.K., 1943-, author
Erlangga, 1999
Buku Referensi
Coast, John
Faber and Faber, 1954
Buku Teks
Weber, Ralf.
Avebury, 1995
Buku Teks
Fergusson, Erna, author
The University of New Mexico Press, 1966
Buku Teks