McGraw-HillOpen University Press, 2006
Buku Teks
edited by Neil Bracht
SAGA Publications, 1999
Buku Teks
Naidoo, Jennie, author
Baillere Tindall , 2000
Buku Teks
Carl I. Fertman, Diane D. Allensworth
Jossey-Bass , 2017
Buku Teks
Naidoo, Jenniem], author
Bailliere Tindal Elsevier, 2011
Buku Teks