Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "ofer-hygd." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 659.
, -hýd, e; f.: es; n.: -hygdu, -hýdu (o); indecl. f. [the plural is used with singular meaning, cf. ofer-méde, -méttu]. I. in a bad sense, pride, arrogance :-- Hæfde hig ofyrhigd (-hýd, MS. T.) tenuit eos superbia, Ps. Spl. 72, 6. Oferhigd supercilio, Wrt. Voc. ii. 76, 20. Oferhygd, Cd. Th. 21, 22; Gen. 328. Wlenco, oferhýd, 258, 21; Dan. 679. Ðæs oferhýdes ord, 272, 3; Sat. 114. Se is kyning ofer eall ða bearn oferhygde (-hýde, Cote. MSS.) ipse est rex super universos filios superbiae, Past. 17, 4; Swt. 111, 22.