Insley, Charles. «Collapse, Reconfiguration or Renegotiation? The Strange End of the Mercian Kingdom, 850-92»4. Reti Medievali Rivista 17, no. 2 (settembre 12, 2016): 231-249. Consultato luglio 23, 2019. http://www.rmojs.unina.it/index.php/rm/article/view/5004.