1. Practical Observations on Nervous and Sympathetic Palpitation of the Heart;Williams,1836
2. Dr John Calthrop Williams, Physician of Nottingham 1801–1856;O'Donovan,1954
3. Jacob Mendez DaCost a: Medical teacher, clinician, and clinical investigator
4. On irritable heart;DaCosta;Am J Med Sci,1871