edited by Jack A. Goldstone, Ted Robert Gurr, Farrokh Moshiri
Westview Press, 1991
Buku Teks
Moore, Harry T., author
Heinemann, 1976
Buku Teks
Happold, F.C.
Christophers, 1938
Buku Klasik
Carroll, Rutter, author
[RIBA , ], 2009
eBooks
Findley, Carter V., author
Wadsworth and Cengage Learning, 2011
Buku Teks