1. The drug explosion;Crooks,1975
2. Enquiry into Competence to Practise. Board of Science and Education of the British Medical Association (1976).
3. Communications as a method of medical audit;McColl;Lancet,1976
4. Drug monitoring in the Health Services;Coull,1968
5. L.J. Christopher, B.R. Ballinger, A.M.M. Shepherd, A. Ramsay, & G. Crooks, Drug Prescribing Patterns in the Elderly, Age and Ageing, in course of publication (1978).