Sage, 1998
Buku Teks
Rifat Sipahi, Tomas Vyhlidal, Silviu-lulian Niculescu, Pierdomenico Pepe, editor
[, Springer], 2012
eBooks
Ika Darnhofer, editor
[, Springer], 2012
eBooks
Sklair, Leslie, author
Oxford University Press, 2002
Buku Teks
edited by Radford Byerly
Westview Press, 1992
Buku Teks