NIELSEN, H. J. R. S. Phillips: Aymer de Valence, Earl of Pembroke 1307-1324. Baronial Politics in the Time of Edward II. At the Clarendon Press, Oxford, 1972. 379 s. £ 6 1/2. Historisk Tidsskrift, [S. l.], v. 13, 1977. Disponível em: https://tidsskrift.dk/historisktidsskrift/article/view/51936. Acesso em: 20 jul. 2024.