Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "lár-cræft." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 621.
.In l. 1 after hæbbe add bóca onbyrged, in l. 2 after onlocen add Libia and Gréca, and add: knowledge acquired by study, erudition :-- Tó rǽdingum . . . geǽmtigion hí silfe . . . and eác tó drihtlicum lárum and tó mænigfealdum lárcræftum lectioni . . . uacent aut etiam doctrinis sacris et diuersarum artium erudiantur disciplinis, Chrd. 66. 36.