edited by Marcello A. Canuto and Jason Yaeger
Routledge, 2000
Buku Teks
Oxford University Press, 1991
Buku Teks
Meyer, J. G.
Follett Publishing Company, 1957
Buku Teks
Lipset, Seymour Martin, author
Basic Books, 1963
Buku Teks
Dickenson pub, 1969
Buku Teks