McQueen, Matthew
Weidenfeld & Nicolson, 1973
Buku Teks
Todaro, Michael P., author
Longman, 1992
Buku Teks
Thirlwall, Anthony Philip, author
English Language Book Society, 1978
Buku Teks
Staley, Eugene, author
Published for the Council on Foreign Relations by Harper, 1961
Buku Teks
Haq, Mahbub ul, 1934-1998, author
Columbia University Press, 1976
Buku Teks