Kelley, Michael P.
Westview Press, 1986
Buku Teks
Todaro, Michael P., author
Addison-Wesley, 2003
Buku Teks
Bayart, Jean-Francois, author
Longman, 1993
Buku Teks
Pan Books, 1980
Buku Teks
George Allen & Unwin in association with the Australian Labor Party, 1983
Buku Teks