edited by Paul Freedman
Thames & Hudson, 2007
Buku Referensi
Hart, James D., author
Oxford University Press, 1950
Buku Teks
Lieberson, Stanley, author
Yale University Press, 2000
Buku Teks
James, P.D., author
Sphere, 1987
Buku Teks
Scott, Geoffrey
W.W. Norton, 1999
Buku Teks