American Board of Professional Psychology (ABPP)
American Board of Rehabilitation Psychology (ABRP)
http://www.abpp.org/i4a/pages/index.cfm?pageid=3361 (take note that on this page there are subheadings on the left with different sections as well as subheadings on the right with related documents).
Division 22 (Rehabilitation Psychology) of the American Psychological Association
OXFORD UNIVERSITY PRESS (Publisher of numerous Academy of Rehabilitation Psychology publications as well as other relevant publications
FOUNDATION FOR REHABILITATION PSYCHOLOGY (FRP)