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Chirag J.Ch.J.PatelChirag J.Ch.J., BelindaB.BurfordBelindaB., John P.AJ.P.A.IoannidisJohn P.AJ.P.A., Assessment of vibration of effects due to model specification can demonstrate the instability of observational associations, „Journal of clinical epidemiology”, 68 (9), 2015, s. 1046–1058, DOI: 10.1016/j.jclinepi.2015.05.029, ISSN0895-4356, PMID: 26279400, PMCID: PMC4555355 [dostęp 2019-03-30].
Chirag J.Ch.J.PatelChirag J.Ch.J., BelindaB.BurfordBelindaB., John P.AJ.P.A.IoannidisJohn P.AJ.P.A., Assessment of vibration of effects due to model specification can demonstrate the instability of observational associations, „Journal of clinical epidemiology”, 68 (9), 2015, s. 1046–1058, DOI: 10.1016/j.jclinepi.2015.05.029, ISSN0895-4356, PMID: 26279400, PMCID: PMC4555355 [dostęp 2019-03-30].
4. Confounding and Deconfounding: Or, Slaying the Lurking Variable, [w:] JudeaJ.PearlJudeaJ., DanaD.MackenzieDanaD., The book of why: the new science of cause and effect, First edition, New York, NY 2018, ISBN 978-0-465-09760-9, OCLC1003311466 [dostęp 2019-03-11]. Brak numerów stron w książce