Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "hád-swǽpa." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 498.
, hád-swápe. For these two substitute:hád-swǽpe, hád-swápe, an; f. A woman who attended to the necessary arrangements for a wedding on the part of the bride, a bridesmaid :-- Hádswǽpe (-a, MS. ; but cf. mínra for mínre, 20) pronuba; ipsa est et paranimpha, Wrt. Voc. i. 52, 29. Brydlofta sponsalia, wógere procus, brydiguma sponsus, hádswápe pronuba, brýd sponsa, hádswápe paranymphus, 50, 35-40.