Alfred J. Rieber, author
Cambridge University Press, 2014
eBooks
Whyte, Ian, author
I.B. Tauris, 2008
Buku Teks
Yefimor, D
Sterling Publisher Prt Ltd, 1975
Buku Teks
Gilbert, Martin, author
Routledge, 1994
Buku Teks
Turner, Louis
Hamish Hamilton , 1970
Buku Teks