A Grief Like No Other: Surviving the Violent Death of Someone You Love 
by Brook Noel and Pamela Blair

A Grief Observed, by C.S. Lewis.

Good Grief: Healing Through the Shadow of Loss,

by Deborah Morris Coryell

Healing After the Suicide of  a Loved One 
by Ann Smolin and John Guinan.

The Grief Recovery Handbook: The Action Program for Moving Beyond Death, Divorce and Other Losses Including Health, Career and Faith
by John James and Russell Friedman.

Understanding Your Grief: Ten Essential Touchstones for Finding Hope and Healing in Your Heart
by Alan D. Wolfelt.