G. E. Berrios, The History of Mental Symptoms: Descriptive Psychopathology Since the Nineteenth Century, Cambridge University Press, (ISBN9780521437363, présentation en ligne)
Raphaele Miljkovitch, Françoise Morange-Majoux, Emmanmuel Sander, Psychologie du développement, Elsevier Health Sciences, (ISBN9782294755453, présentation en ligne)
F.W. Dyson, Arthur S. Eddington et C.R. Davidson, « A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919 », Philosophical Transactions of the Royal Society A: Physical, Mathematical and Engineering Sciences, vol. 220, nos 571-581, , p. 291–333 (DOI10.1098/rsta.1920.0009, Bibcode1920RSPTA.220..291D).
F.W. Dyson, Arthur S. Eddington et C.R. Davidson, « A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made at the Solar eclipse of May 29, 1919 », Philosophical Transactions of the Royal Society A: Physical, Mathematical and Engineering Sciences, vol. 220, nos 571-581, , p. 291–333 (DOI10.1098/rsta.1920.0009, Bibcode1920RSPTA.220..291D).