References
- Nuffield 16+ Science Project . 1974‐1977 . Organiser: K. Wild , Department of Education, University of Keele .
- Open University . 1973 . “ Course E341 ” . In Methods of Educational Enquiry , Open University .
- Oppenheim , A.N. 1973 . Questionnaire Design and Attitude Measurement , London : Heinemann .
- Parlett , M. and Hamilton , D. 1973 . Evaluation as Illumination , University of Edinburgh, Occasional Paper No. 9 .
- Shipman , M.D. 1974 . Inside a Curriculum Project , London : Methuen .