Fox, Frank W., author
Kendall/Hunt , 1990
Buku Teks
edited by Charles R. Figley
Sage, 2012
Buku Referensi
Messer, Michi
Springer, 2012
eBooks
edited by Lionel Bently, Jennifer Davis and Jane C. Ginsburg
Cambridge University Press, 2010
Buku Teks
Walsh, Anthony, 1941-, author
Sage Publications, , 2007
Buku Teks