edited by Richard A. Easterlin
University of Chicago Press, 1980
Buku Teks
Nafziger, E. Wayne, author
Prentice-Hall, 1990
Buku Teks
Curry, Steve, author
St. Martin's Press , 1993
Buku Teks
Myint, Hla, author
Hutchinson University Library, 1973
Buku Teks
IDCA, 1981
Buku Teks