Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "manigfeald-lic." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 631.
;adj. Manifold, having many parts, of many kinds, various :-- Ðeáh hit ús manigfealdlíc þince, sum gód, sum yfel, hit is ðeáh him ánfeald gód, Bt. 39, 6; Fox 220, 8. Forðon wǽron swá manigfealdlíce sorga Cristes þegnum therefore Christ's servants had such manifold sorrows, Blickl. Homl. 135, 18. Sangeras and mæssepreóstas and manigfealdlíce ciricean þegnas Church ministers of many kinds, 207, 32.