Campbell, Kenneth L., 1955-, author
an imprint of Bloomsbury Publishing Plc, 2015, 2015
Buku Teks
Conklin, William E., author
Kluwer, 2001
Buku Teks
Blackwell , 2005
eBooks
Weigel, Sigrid, author
Routledge , 1996
Buku Teks
Thibault, Paul J., author
Routledge, 1997
Buku Teks