 | Play, Playfulness, Creativity and Innovation | Patrick Bateson, Paul Martin | 2013 |
 | The Play of Man | Karl Groos | 1901 |
 | Homo Ludens: A Study of the Play-Element in Culture | Johan Huizinga | 1938 |
 | Man, Play and Games | Roger Caillois | 1961 |
 | Playfulness: Its relationship to Imagination and Creativity | J. Nina Leiberman | 1977 |
 | The Grasshopper: Games, Life and Utopia | Bernard Suits | 1978 |
 | The Well-Played Game | Bernie DeKoven | 1978, 2013 |
 | The Ambiguity of Play | Brian Sutton-Smith | 1997 |
 | Play Reconsidered: Sociological Perspectives on Human Expression | Thomas S. Henricks | 2006 |
 | Rejuvenile | Christopher Noxon | 2006 |
 | The Ludic City: Exploring the Potential of Public Spaces | Quentin Stevens | 2007 |
 | Play: How it Shapes the Brain, Opens the Imagination and Invigorates the Soul | Stuart Brown | 2009 |
 | Vygotsky and Creativity: A cultural-historical approach to Play, Meaning making and the Arts. | M. Cathrene Connery, Vera P, John- Steiner & Ana Marjanovic-Shane | 2010 |
 | Om Leg | Helle Skovbjerg | 2013 |
 | A Playful Path | Bernie DeKoven | 2014 |
 | Tekster om Leg | Helle Skovbjerg, Carsten Jessen | 2014 |
 | Play Matters | Miguel Sicart | 2014 |
 | The New Adventure Play Movement: How Communities Across the USA are Returning Risk and Freedom to Childhood | Morgan Leichter-Saxby and Suzanna Law | 2015 |
 | Diversity of Play | Mathias Fuchs | 2015 |
 | The Dark Side of Game Play:
Controversial Issues in Playful Environments | Torill Elvira Mortensen et al. (eds.) | 2015 |
 | Play and the Human Condition | Thomas S. Henricks | 2015 |
 | Play: A Theory of Learning and Change | Tara Brabazon (Editor) | 2016 |
 | Why We Play An Anthropological Study | Roberte Hamayon | 2016 |
 | PLAYIN' THE CITY:
Artistic and Scientific Approaches to Playful Urban Arts | Judith Ackermann, Andreas Rauscher, Daniel Stein (editors) | 2016 |
 | Animal play behavior | Robert Fagen | 1981 |
 | Play Anything | Ian Bogost | 2016 |
 | The Power of Play - Voices from the Play Community | Mathias Poulsen (main editor) et al. | 2017 |
 | Wonderland: How Play Made the Modern World | Steven Johnson | 2016 |
 | Policy for Play: Responding to Children's Forgotten Right | Adrian Voce | 2015 |
 | The Play Ethic: A Manifesto for a Different Way of Living | Pat Kane | 2004 |
 | Den Legende Organisation | Ann Charlotte Thorsted | 2013 |
 | Legens flertydighed
- børns leg i en institutionaliseret barndom | Maria Øksnes | 2012 |
 | Deep Play | Diane Ackerman | 2000 |
 | The Aesthetic of Play | Brian Upton | 2015 |
 | Practice-based research in children's play | Dr Wendy Russell, Dr Stuart Lester and Hilary Smith (editors). | 2018 |
 | Architecture in Play Intimations of Modernism in Architectural Toys | Tamar Zinguer | 2015 |
 | Practically Joking | Moira Marsh | 2015 |
