ISBN 0-19-821716-1 Strickland, Matthew (2005). England and Normandy 1066–1217. Cambridge: University of Cambridge. ISBN 0-521-02346-7 Strickland, Matthew, ed
doi:10.1016/0006-3207(91)90031-4. ^ Wurster, D. H.; Wurster, C. F.; Strickland, W. N. (1965). “Bird Mortality Following DDT Spray for Dutch Elm Disease”
of her servitors as the Duchesses of Suffolk [...] have done?" ^ Agnes Strickland: Lives of the Tudor princesses including Lady Jane Gray and her sisters