, æt Slesvig, Ors. 1, 1; Bos. 21, 30, 39. [Cf. Ethelweard 'Anglia vetus sita est inter Saxones et Giotos, habens oppidum capitale, quod sermone Saxonico Sleswic nuncupatur, secundum vero Danos Haithaby.' Icel. Heiðabær.]
Cite the scanned version of the original dicionary like this:
Bosworth, Joseph. "Hǽðum." An Anglo-Saxon Dictionary: Based on the Manuscript Collections of the Late Joseph Bosworth. Ed. Thomas Northcote Toller. Oxford: Clarendon Press, 1898. 503.