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