edited by Charles R. Figley
Sage, 2012
Buku Referensi
Field Enterprises Educational Corporation, 1963
Buku Referensi
Lenk, John D., author
McGraw-Hill, 1993
Buku Referensi
Murray, Michael T., author
Three Rivers Press, 1996
Buku Teks
Wilwood, Chrissie, author
Piatkuss, 1998
Buku Teks