Herbert Grieson and J.C. Smith, A Critical History of English poetry (1944: rpt., Aylesbury and Slough: Hazel Watson and Viney Ltd. Peregrine Books, 1962), p. 383.
Douglas Bush, Mythology and the Romantic Tradition in English Poetry, P. 200.
G. R. Strange, “Tennyson’s Mythology-A Study of ‘Demeter and Persephone’,” in Critical Essays on the poetry of Tennyson, p. 137.