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Birkinshaw, D.  (2011, January 06). Shoenberg, Sir Isaac (1880–1963), television engineer. Oxford Dictionary of National Biography. Retrieved 18 Apr. 2021, from https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-36072.

Birkinshaw, D. C. "Shoenberg, Sir Isaac (1880–1963), television engineer." Oxford Dictionary of National Biography.  January 06, 2011. Oxford University Press. Date of access 18 Apr. 2021, <https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-36072>

Birkinshaw, D. C. "Shoenberg, Sir Isaac (1880–1963), television engineer." Oxford Dictionary of National Biography. 23 Sep. 2004; Accessed 18 Apr. 2021. https://www.oxforddnb.com/view/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-36072.