(en) Nicholas Griffin, « WHAT DID RUSSELL LEARN FROM LEIBNIZ? », Journal for the History of Analytical Philosophy, Vol 2, Iss 1 (2013), (ISSN2159-0303, DOI10.4148/jhap.v2i1.1709, lire en ligne, consulté le ).
(en) Nicholas Griffin, « WHAT DID RUSSELL LEARN FROM LEIBNIZ? », Journal for the History of Analytical Philosophy, Vol 2, Iss 1 (2013), (ISSN2159-0303, DOI10.4148/jhap.v2i1.1709, lire en ligne, consulté le ).
(en) Nicholas Griffin, « WHAT DID RUSSELL LEARN FROM LEIBNIZ? », Journal for the History of Analytical Philosophy, Vol 2, Iss 1 (2013), (ISSN2159-0303, DOI10.4148/jhap.v2i1.1709, lire en ligne, consulté le ).