Cornford, Hugh et al. “Frances Cornford 1886-1960”. Selected Poems, edited by Jane Dowson and Jane Dowson, Enitharmon Press, 1996, p. xxvii - xxxvii. xxxiv-xxxv
Matthew, Henry Colin Gray et al., editors. Oxford Dictionary of National Biography. http://www.oxforddnb.com/. under (Rupert) John Cornford