Cite the scanned version of the original dicionary like this:
Toller, T. Northcote, and Joseph Bosworth. "sam-tinges." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth : Supplement. Oxford: Clarendon Press, 1921. 693.
(sæm-, sem-); adv. In close connection (as regards time), immediately, forthwith, continuo :-- Meahtest ðé full recen on ðæm rodere upan siððan weorþan, and ðonne samtenges æt ðæm ælcealdan steorran, Met. 24, 18. Swá hraðe swá ðæt wolcn styrode, swá síðode samtinges eal seó fyrd after ðám wolcne, Homl. Th. ii. 196, 11. Ðá nolde hé hí sæmtinges ácwellan ac lét him fyrst he would not kill them immediately, but allowed them time, 424, 14. Ðá áwurpon ða hǽðenan sóna heora gedwyld, and tó heora Scyppende sæmtinges gebugon, 510, 3: 230, 18.