Blair, Sheila S.
Yale University Press, 1994
Buku Teks
edited by Markus Hattstein, Peter Delius
Konemann, 2000
Buku Referensi
edited by George Ansell, Markus Hattstein, Peter Delius
H.F. Ullmann, 2010
Buku Referensi
Redstone, Louis G.
McGraw-Hill, 1968
Buku Teks SO
Michell, George
Thames & Hudson, 2000
Buku Teks SO