Here are some of the books that have helped me learn about executive functions. If you use Library Thing, here is a link to my catalog of books there.
In case you don't, here are some titles listed below with links to their spot on Amazon.com.
The Executive Brain: Frontal Lobes and the Civilized Mind
by Elkhonon Goldberg
Executive Function in Education: From Theory to Practice
by Lynn Meltzer
The Development Of Executive Function In Early Childhood (Monographs of the Society for Research in Child Development)
by Philip David Zelazo
Handbook of Self-Regulation: Research, Theory, and Applications
Edited by Roy F Baumeister & Kathleen D. Vohs
ADHD and the Nature of Self-Control
by
Russell A. Barkley
Attention, Memory, and Executive Function
by
G., Reid Lyon
(Editor),
Norman, A. Krasnegor
(Editor)