Leslie (编). Dictionary of National Biography 5. London: Smith, Elder & Co. 1886. Head, David M. Howard, Thomas, Second Duke of Norfolk (1443–1524), Magnate
legend toyed with the best. [2024-03-31]. (原始内容存档于2024-03-31). Careful diplomat brokered regional co-operation. The Sydney Morning Herald. 15 August 2008