Here is a book that helps parents deal with children who have a sensory integration dysfunction [SID]. It applies for children with Autism, as it tends to go hand-in-hand:

Sensory-Sensitve Child- Karen A. Smith, Ph.D
Practical Solutions for Out-of-Bounds Behaviour

Tactile Modulation Difficulties
-making sense of what you touch

Auditory Modulation Difficulties
-making sense of what you hear

Olfactory and Gustatory Modulation Difficulties
-taste and smell

Visual Modulation Difficulties

Vestibular-Proprioceptive Modulation Difficulties
-Difficulties of Balance, Movement, and Body Position

Another great read:
Out-of-Sync Child