Information sur la source History of the Isle of Man [base de données en ligne]. Provo, UT: Operations Inc, 2005.
Données originales : Bullock, H. A.. History of the Isle of Man : with a comparative view of the past and present state of society and manners : containing also biographical anecdotes of eminent persons connected with that island. London: Printed for Longman, Hurst, Rees, Orme and Brown, 1816.