If you are interested in finding other titles like Dave Pelzer's “A Child Called It,” then I'm sure you'll want to read the sequels, "The Lost Boy" and "A Man Called Dave", if you haven't already done so. A couple other titles you may want to try are:
Runaway by Wendelin Van Draanen.
After running away from her fifth foster home, Holly, a twelve-year-old orphan, travels across the country, keeping a journal of her experiences and struggle to survive.
They Cage the Animals at Night by Jennings Michael Burch.
Burch was left at an orphanage and never stayed at any one foster home long enough to make any friends. This is the story of how he grew up and gained the courage to reach out for love.
Beautiful Child by Torey Hayden.
The author of the bestselling "One Child" introduces readers to a seven-year-old girl who refuses to speak. Hayden, a special education teacher, chronicles her efforts to connect with this wounded girl, and tells of the other troubled children in her class with their own unique problems.