For participants in The Wing Institute Third Annual Summit on Evidence-based Education, April 24, 2012:

Education and Treatment of Children, Vol. 35, no. 2
Special issue on Evidence-based Practice by  Trina D. Spencer, Ronnie Detrich, and Timothy A. Slocum
$10.00

Education and Treatment of Children, Vol. 35
(February, May, August, and November)
$20.00