References
- Duke , J. 1983 . Interactive Video , 24 London : CETUK .
- Freeman , F.N. , ed. 1924 . Visual Education , Chicago, IL , USA : University of Chicago Press .
- Henry , N.B. 1949 . The 48th Yearbook of the NSSE , Chicago, IL , USA : University of Chicago Press .
- Pressey , S.L. 1926 . A simple apparatus which gives tests and scores ‐‐ and teaches . School & Society , 23 : 373 – 6 .
- Pressey , S.L. 1932 . A third and fourth contribution toward the coming ‘industrial revolution’ in education . School & Society , 35 : 668 – 72 .
- Skinner , B.F. 1954 . The science of learning and the art of teaching . Harvard Educational Review , 24 ( 2 ) : 86 – 97 .
- Skinner , B.F. 1958 . Science , 128 : 969 – 77 .
- Unwin , D. and Leedham , J. , eds. 1967 . Aspects of Educational Technology , 24 London : Methuen .