Gardiner, Eileen, author
Cambridge University Press, 2015
Buku Teks
Gardiner, Eileen, author
Cambridge University Press, 2015
Buku Teks
Berry, David M. (David Michael), author
Polity Press, 2017
Buku Teks
Baxes, Gregory A., author
Prentice-Hall, 1984
Buku Teks
Irwan Prasetya Gunawan, author
Universitas Multimedia Nusantara, Center for New Media ICT Research, 2010
Artikel Jurnal