G. Halsall, Warfare and Society in the Barbarian West, 450-900, Londen, 2003, p. 164.
G. Halsall, Warfare and Society in the Barbarian West, 450-900, Londen, 2003, p. 208, art. angon, in C. Blair - L. Tarassuk (edd.), The Complete Encyclopedia of Arms and Weapons, New York, 1982, pp. 19–20, R. Underwood, Anglo-Saxon Weapons and Warfare, Stroud, 1999, p. 24.