Gilliam, Ronald B.
Jones and Bartlett Publishers, 2011
Multimedia
Fogle, Paul T., author
Delmer, 2013
Buku Teks
Gillam, ronald B., author
Jones and Bartlett Learning, 2011
Buku Teks
Gelfer, Marylou Pausewang, author
McGraw-Hill, 1996
Buku Teks
edited by Shelagh Brumfitt
Wiley - Blackwell, 2010
Buku Teks