Enrich Professional Pub., 2012
Buku Teks
Diez, Pedro J. Gutierrez, author
Springer, 2012
eBooks
edited by Douglas A. Grouws
Macmillan Library Reference, 1992
Buku Referensi
Jackson, Meredith
The University of Sydney, 2007
Multimedia
Depdikbud, 1995
Buku Referensi