Topping, K. J., Scoble, J., & Oxley, L. (1988). The cued spelling training pack (video resource pack). Huddersfield: Kirklees Paired Learning Project.
Revised as:
Topping, K. J., Oxley, L. & Scoble, J. (2004). Cued Spelling resource pack (CD + DVD). Dundee: Centre for Peer Learning, University of Dundee.
https://discovery.dundee.ac.uk/en/publications/cued-spelling-resources-pack