Thanks to Natasha Boskic for this
John Rice (2010). New 3D Learning Book by Karl Kapp. Educational Games Research: Research and discussion concerning instructional video games. February 8, 2010.
If you are interested in using 3D environment for teaching and learning, you may take a look at a book recommended by Rice, Learning in 3D: Adding a New Dimension to Enterprise Learning and Collaboration, by Karl Kapp.