Chwarae a lles Adolygiad o ymchwil diweddar i chwarae plant, polisi cymdeithasol ac ymarfer, gyda ffocws ar Gymru - adolygiad llenyddiaeth Russell Wendy Heftet / 2024 / Engelsk
Playing and being well A review of recent research into children’s play, social policy and practice, with a focus on Wales - literature review Russell Wendy Heftet / 2024 / Engelsk
Everyday Playfulness A New Approach to Children's Play and Adult Responses to It Lester Stuart Heftet / 2019 / Engelsk
