Classifying K-12 Blended Learning
Direct download link for this book in PDF format. Although this book is targeted at the K-12 sector (primary & secondary), it has really good descriptions and case studies of the Blended Learning models.
Click http://www.christenseninstitute.org/wp-content/uploads/2013/04/Classifying-K-12-blended-learning.pdf link to open resource.