"The Rings", Loddiswell: a new survey by the Royal Commission on the Historical Monuments of England.

von Wilson-North, W. R.
Veröffentlicht in Devon Archaeological Exploration Society Proceedings, New Series, 48 (1990)
1990.
Umfang/Format: 87-100 : Abb. Taf.

Denbury Camp, Torbryan Parish: a new survey by the Royal Commission on the Historical Monuments of England.

von Probert, S. J.
Veröffentlicht in Devon Archaeological Exploration Society Proceedings, New Series, 50 (1992)
1992.
Umfang/Format: 53-59 : Abb.

The confusion of conversion: Streanaeshalch, Strensall and Whitby and the Northumbrian church.

von Barnwell, P. S.
Veröffentlicht in The cross goes north. Processes of conversion in Northern Europe, A.D. 300-1300.
York : York Medieval Press, 2003.
Umfang/Format: 311-326 : Abb.