MORGAN, Alastair William James. Who's Who 2016, A & C Black, 2016 (online edition, Oxford University Press, 2015). [2016-05-25]. (原始内容存档于2019-07-13) (英语).
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MORGAN, Alastair William James. Who's Who 2016, A & C Black, 2016 (online edition, Oxford University Press, 2015). [2016-05-25]. (原始内容存档于2019-07-13) (英语).