Gradual Release of Responsibiity Model (Instructional Framework):

Pearson, P. D. & Gallagher, M. C. (1983). The instruction of reading comprehension. Contemporary Educational Psychology, 8 (3), 317-344. This source describes an instructional model including: explicit instruction, scaffolding, strategy use, guiding practice, and self-monitoring which are foundations for the Gradual Release Model.
Lipson, M.Y. & Wixson, K.K. (2003). Assessment and instruction of reading and writing difficulty: An interactive approach (3rd Ed.). Boston: Pearson Education, Inc, pages 133-135.