1. Antonacci, D., DiBartolo, S., Edwards, N., Fritch, K., McMullen, B., & Murch-Shafer, R. (2008). The power of virtual worlds in education: A second primer and resource for exploring the potential of virtual worlds to impact teaching and learning. ANGEL Learning ISLE Steering Committee. Retrieved December 15, 2014, from http://www.angellearning.com/products/secondlife/downloads/The%20Power%20of%20Virtual%20Worlds%20in%20Education_0708.pdf
2. Curiosity, interest and engagement in technology-pervasive learning environments: a new research agenda
3. The Scientific Research Potential of Virtual Worlds
4. BartleR. (2003). Designing virtual worlds. New Riders Publishing.
5. Avatars as information: Perception of consumers based on their avatars in virtual worlds