Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "gán." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 36.
.Add:I. of movement, irrespective of the point of departure or destination. (1) to go on foot, walk :-- 'Óþer hæfþ his fóta geweald þ̵ hé mæg gán. . . óþer næfþ his fóta geweald þ̵ hé mæge gán. . . and onginþ creópan . . . hwæþer ðára twégra þincþ þé mihtigra ?' Ðá cwæþic : ' Sé biþ mihtigra sé ðe gǽþ þonne sé þe criépð, ' Bt. 36, 4; F. 178, 11-16. Healte gáð claudi ambulant, Mt. ll, 5. Heó sóna árás and eóde (ambulabat), Mk. 5, 42. Hé on þám temple eóde, 11, 27. Eóde Isaac on þám wege deambulabat Isaac per viam, Gen. 24, 62.