Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "eár." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 231.
an ear of corn. l. eár, and add :-- Eár spica, Wrt. Voc. i. 38, 47: 287, 20. In eher (æhher, R.) in spica, Mk. L. 4, 28. Geberen eár, Lch. ii. 124, 17. Þá hié heora corn ripon ealle þá eár (spicae) wǽron blódge, Ors. 4, 8; S. 188, 28. Ðára ehera spicarum, Mk. p. 2, 16. Eára, An. Ox. 1411. Cornbǽrum eárum granigeris spicis, 2361. Eár spicas, Wrt. Voc. ii. 120, 84. Ehera, Mt. p. 16, 13. Þá ehera (æchir, R.), Mt. L. 12, 1. Ehras, Lk. L. 6, 1. v. æhrige.