Strong, Roy. C. (1977): Berkeley: University of California Press. . Taylor, Christopher (1998): Edinburgh: Edinburgh University Press. . Tribe, Anna. (2002): Caerleon: Monmouthshire Antiquarian Association. Whittle, E. (1989): «The Renaissance gardens of Raglan Castle», 17 (1), pp. 83–94. Whittle, E. (1990): «The 16th and 17th century gardens at Raglan Castle», 6, pp. 69–75.