Kumar, Ann
Curzon Press, 1997
Buku Teks
cambridge, 2006
Buku Teks
Black, Christopher F., author
Routledge, 2001
Buku Teks
Irma Taavitsainen, Paivi Pahta, editor
Cambridge University Press, 2011
Buku Teks
Routledge,Taylor & Francis Group, 2016
Buku Teks