Williams, Anne, author
Butterworth-Heinemann , 1998
Buku Teks
edited by Rosalind S. Miller, and Helen Rehr
Prentice-Hall, 1983
Buku Teks
edited by Jonathan Gabe and Lee E. Monaghan
Sage, 2013
Buku Teks
Bond, John
Churchill Livinstone , 1994
Buku Teks
Matteo, M. Robin, author
Brooks/Cole, 1991
Buku Teks