"Introduction". Diseases in Old Age: A Clinical and Pathological Study of 7941 Individuals Over 61 Years of Age, Cambridge, MA and London, England: Harvard University Press, 1951, pp. ix-xii. https://doi.org/10.4159/harvard.9780674429512.intro
(1951). Introduction. In Diseases in Old Age: A Clinical and Pathological Study of 7941 Individuals Over 61 Years of Age (pp. ix-xii). Cambridge, MA and London, England: Harvard University Press. https://doi.org/10.4159/harvard.9780674429512.intro
1951. Introduction. Diseases in Old Age: A Clinical and Pathological Study of 7941 Individuals Over 61 Years of Age. Cambridge, MA and London, England: Harvard University Press, pp. ix-xii. https://doi.org/10.4159/harvard.9780674429512.intro
"Introduction" In Diseases in Old Age: A Clinical and Pathological Study of 7941 Individuals Over 61 Years of Age, ix-xii. Cambridge, MA and London, England: Harvard University Press, 1951. https://doi.org/10.4159/harvard.9780674429512.intro
Introduction. In: Diseases in Old Age: A Clinical and Pathological Study of 7941 Individuals Over 61 Years of Age. Cambridge, MA and London, England: Harvard University Press; 1951. p.ix-xii. https://doi.org/10.4159/harvard.9780674429512.intro