edited by Miles Kahler
Cornell University Press, 2009
Buku Teks
Clark, Romy
Routledge, 1997
Buku Teks
by Rafi A. Mohammed [and others]
McGraw-Hill, 2004
Buku Teks
editors, Rui Calcada, Raimundo Delgado, Antonio Campos e Matos
CRC Press, Taylor & Francis Group, 2009
Buku Teks
Barna, Arpad
Wiley Interscience, 1970
Buku Teks