Flynn, Norman, author
Harvester, 1990
Buku Teks
Dooren, Wouter van, author
Routledge, 2015
Buku Teks
edited by Massimo Sargiacomo
McGraw-Hill, 2013
Buku Teks
Elliott, James, author
Routledge, 1997
Buku Teks
edited by Ronald J. Burke, Andrew J. Noblet
Edward Elgar, 2013
Buku Teks