Thompson, Willie
Blackwell, 1998
Buku Teks
Blackburn, Glenn, author
St. Martin's, 1985
Buku Teks
Joselit, David, author
Thames & Hudson world of art, 2003
Buku Teks
Watson, George, author
Macmillan, 1991
Buku Teks
International Food Policy Research Institute, The World Bank, 2006
Majalah, Jurnal, Buletin