Heinemann modular mathematics for Edexcel AS and A-level, by Geoff Mannall and Michael Kenwood. Pure mathematics 4. Pp. 154 . £8.99. 2002. ISBN 0 435 51091 6. Pure mathematics 5. Pp. 147. £10.99. 2002. ISBN 0 435 51092 4. Pure mathematics 6. Pp. 202. £10.99. 2002. ISBN 0435 51093 2 (Heinemann).