Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "sam-." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 813.
.Add: (1) sam . . . sam :-- Sam (tam) gebróþrum, sam (quam) eallum geleáffullum, Angl. xiii. 414, 706. Sam gé etan, sam gé drincan, sam gé áht elles gedón siue manducatis, siue bibitis, siue aliud quid facietis, Scint. 169, 12. (2) sam þe . . . sam þe :-- Sam þe þeów, sam þe frig siue servus, siue liber, Scint. 189, 14: 226, 13. Sam þe fram þám foresǽdon fæder, sam þe fram æfterfyligendum hys tam a predicto patre, quam a sequacibus suis, Angl. xiii. 375, 140: 377, 176. (2 a) sam þe . . .