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MacGibbon, David. Elizabeth Woodville（1437-1492）: Her Life and Times. London: Arthur Baker, 1938.
Hughes, Jonathan. Arthurian Myths and Alchemy: The Kingship of Edward Ⅳ. Stroud, Gloucestershire: Sutton Publishing, 2002.
Mancinus, Dominicus. The Usurpation of Richard the Third: Dominicus Mancinus ad Angelum Catonem de occupatione Regni Anglie per Ricardum Tercium Libellus, translated and with an introduction by C.A.J. Armstrong. Oxford: Clarendon Press, 1969.
——. Richard Ⅲ. London: Tempus, 2003.
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——. The Prince in the Tower: The Short Life & Mysterious Disappearance of Edward V. London: Tempus, 2007.
Neillands, Robin. The Wars of the Roses. London: Cassell, 1992.
Hicks, Michael. Anne Neville: Queen to Richard Ⅲ. London: Tempus, 2007.
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——. Richard Ⅲ. London: Eyre Methuen, 1981.
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Royle, Trevor. The Road to Bosworth Field: A New History of the Wars of the Roses. London: Little Brown, 2009.
Crosland, Margaret. The Mysterious Mistress: The Life and Legend of Jane Shore. Stroud, Gloucestershire: Sutton Publishing, 2006.
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——. Lancastrians, Yorkists, and Henry Ⅶ. London: Macmillan, 1964.
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Chrimes, S. B. Henry Ⅶ. London: Eyre Methuen, 1972.
Simon, Linda. Of Virtue Rare: Margaret Beaufort, Matriarch of the House of Tudor. Boston: Houghton Miflin, 1982.
Cheetham, Anthony. The Life and Times of Richard Ⅲ. London: Weidenfeld & Nicolson, 1972.
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Castor, Helen. Blood & Roses: The Paston Family in the Fifteenth Century. London: Faber & Faber, 2004.
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参考书目
Williamson, Audrey. The Mystery of the Princes: An Investigation into a Supposed Murder. Stroud, Gloucestershire: Sutton Publishing, 1978.
更多的研究资料和笔记存放在我的个人网站PhilippaGregory.com上，读者们也许会有兴趣参与那里的线上讨论。
Wilson-Smith, Timothy. Joan of Arc: Maid, Myth and History, Stroud, Gloucestershire: Sutton Publishing, 2006.
我非常感激那些研究了玛格丽特·博福特的生平，以及她所处时代的历史学家们，特别是为她撰写传记的琳达·西蒙，以及迈克尔·K.琼斯和马尔科姆·G.安德伍德，他们的传记作品正是我这本小说的出发点。我对认真阅读我的手稿的迈克尔·琼斯致以由衷的感谢。
Wroe, Ann. Perkin: A Story of Deception. London: Jonathan Cape, 2003.
这是一本在写作过程中带给我许多乐趣的书，讲述的是一个在俗世大获全胜，同时又努力事奉上帝的女人。她作为女权历史学家口中的“博学之人”，是少数几个为学习知识的权利而努力争取的女人；对于都铎的史学家来说，她是创建了家族的“女家长”；在不那么恭敬的传记作家笔下，她又是来自地狱的“老婊子”。为读者塑造这样一个从孩提时就笃信上帝安排的命运，而在成年后敢于为儿子夺取英格兰王位的女人，对我来说很有挑战，也充满乐趣。小说中有些内容是真实的历史，有些是推测，还有些纯属虚构。尤其是我们并不知道是谁杀死了伦敦塔中的王子们，甚至不知道他们是否真的死在了伦敦塔中。显然，对王位拥有合法继承权的那些人——理查德三世、白金汉公爵、玛格丽特·博福特和她的儿子——从他们的死亡中获利最大。