edited by John F. Kantner, Lee McCaffrey
Lexington Books, 1975
Buku Referensi
edited by Warren C. Robinson
Population Council, 1975
Buku Teks
Barclan, George W., author
Princeton University Press, 1954
Buku Teks
edited by Richard A. Easterlin
University of Chicago Press, 1980
Buku Teks
Galbraith, John Kenneth, 1908-2006, author
Harvard University Press, 1964
Buku Teks