Vogt, M. (1969). "Obituary. Sir Henry Hallett Dale, O.M., F.R.S". International Journal of Neuropharmacology. 8 (2): 83–84. doi:10.1016/0028-3908(69)90001-X. PMID4890938.
Vogt, M. (1969). "Obituary. Sir Henry Hallett Dale, O.M., F.R.S". International Journal of Neuropharmacology. 8 (2): 83–84. doi:10.1016/0028-3908(69)90001-X. PMID4890938.