Making Content Comprehensible for English Learners: The SIOP Model (4th Edition) (SIOP Series) 4th (fourth) Edition by Echevarria, Jana J., Vogt, MaryEllen J., Short, Deborah J. published by Pearson (2012)

In this new fourth edition, the authors present the most comprehensive, coherent model of sheltered instruction yet by fully explaining the widely popular Sheltered Instruction Observation Protocol Model and providing lesson plans and instructional activities to help teachers.