Sacks, Terrence J.
VGM Career Harizons , 1993
Buku Teks
Humphries, Judith
Kogan Page, 1994
Buku Teks
Springer, 2012
eBooks
Stanfield, Peggy S. , author
Jones & Bartlett Learning, 2012
Buku Teks
Mitchell, Joyce, author
Delmar/Thomson Learning, 2002
Buku Teks