] . (2011). Learning assignments im virtual worlds: theoretical systematization and didactical requirements. In , Virtual Immersive and 3D Learning Spaces: Emerging Technologies and Trends (S. 54-77). Hershey: IGI Global. doi:10.4018/978-1-61692-825-4.ch004
text:
https://www.researchgate.net/publication/221672143_Learning_Assignments_in_Virtual_Worlds_Theoretical_Systematization_and_Didactical_Requirements