[footnote 25] Tripney, J et al (2018) 'Promoting Teacher Engagement With Research Evidence', Cardiff: Wales Centre for Public Policy, 4.
[troednodyn 25] Tripney, J et al (2018) 'Meithrin Cyswllt Athrawon â Thystiolaeth Ymchwil', Caerdydd: Canolfan Polisi Cyhoeddus Cymru, 4.