Thomson Delmar Learning, 2008
Multimedia
Bird, Doni, author
Elsevier Saunders, 2015
Buku Teks
Hollins, Carole, author
Blackwell Munksgaard, 2006
Buku Teks
Bartolomucci Boyd, Linda R., author
Elsevier Saunder, 2012
Buku Referensi
Johnson, Orlen N., author
Pearson Prentice Hall, 2007
Buku Teks