(1) by H M Colvin ... [et al] 1982 The history of the King's Works, volume 4 : 1485-1660 (Part 2)
Page(s)549-50
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(2) World Wide Web page
Minor Fortifications of the Isle of Wight. 2009. St Helens, http://www.btinternet.com/~rob.martin1/fort/home.htm [Accessed 15-APR-2009]
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