Online. [10 March 2008]. (原始内容存档于2022-03-06). Underdown, David. Somerset in the Civil War and Interregnum. David & Charles. 1973: 116. ISBN 0-7153-5805-7.
MD: Lippincott Williams & Wilkins. 2004: 453–456. ISBN 0-7817-3650-1. Underdown B, Schiff J. Immunoglobulin A: strategic defense initiative at the mucosal
nationale de France. [24 April 2023] (French). 引文格式1维护:未识别语文类型 (link) Edward Underdown - Biography, Movie Highlights and Photos - AllMovie. AllMovie. Peter