Marr, Phebe
Colorado Westvies Press, 1985
Buku Teks SO
Singapore Archipelago Press 1996,
Buku Referensi
edited by R.C. Olby, G.N. Cantor, J.R.R. Christie and M.J.S. Hodge
Routledge, 1990
Buku Referensi
Arnason, H. Harvard
Thames & Hudson, 1998
Buku Referensi
Frampton, Kenneth
Thames and Hudson, 1992
Buku Teks SO