
Jesper Juul is a Danish game designer, educator, and theorist in the field of video game studies. He is an associate professor at the Danish Design School.
Excerpt from Wikipedia, available under CC BY-SA 4.0.

Half-real
2005
ISBN 9780262516518
Your competent child
2001
ISBN 9780374527907
Your Competent Child Toward a New Paradigm in Parenting and Education
2011
ISBN 9781452538914