"Swete, Henry Barclay", Who Was Who, A & C Black, 1920–2008; online edn, Oxford University Press, December 2007, retrieved 1 October 2012
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One or more of the preceding sentences incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1922). "Swete, Henry Barclay". Encyclopædia Britannica. Vol. 32 (12th ed.). London & New York: The Encyclopædia Britannica Company. p. 637.