1. Alliance for Excellent Education. (2011). Digital learning and technology: Federal policy recommendations to seize the opportunity and promising practices that inspire them. Retrieved from http://all4ed.org/reports-factsheets/digital-learning-and-technology-federal-policy-recommendations-to-seize-the-opportunity-and-promising-practices-that-inspire-them/
2. Alliance for Excellent Education. (2012). The digital learning imperative: How technology and teaching meet today’s education challenges. Retrieved from http://all4ed.org/reports-factsheets/the-digital-learning-imperative-how-technology-and-teaching-meet-todays-education-challenges/
3. Identifying and addressing teaching challenges in K-12 online environments.;L.Archambault;Distance Learning,2010
4. K–12 Distance Educators at Work