Meier, Gerald M., author
Oxford University Press, 1984
Buku Teks
Nafziger, E. Wayne, author
Cambridge University Press, 2006
Buku Teks
Griffin, Keith, author
St. Martin Press, 1989
Buku Teks
Todaro, Michael P., author
Longman, 1992
Buku Teks
Staley, Eugene, author
Published for the Council on Foreign Relations by Harper, 1961
Buku Teks