Prentice Hall, Pearson Education, 2008
Multimedia
Proctor, Tony
Routledge, Taylor & Francis Group, 1999
Buku Teks
Artikel Jurnal
Neng Widiya Puspitasari, author
LPPM Universitas Terbuka, 2018
Artikel Jurnal
Nadler, Gerald
California Prima Publishing 1998.,
Buku Teks