^Giscombe, C. S. (Winter 2012). "Precarious Creatures". The Kenyon Review, New Series. Kenyon College. ج. 34 ع. 1: 157–175. JSTOR:41304743. I looked it up later and found out that it's generally conceded that they were all dead by the 1680s. But a story persists that a fellow named MacQueen killed the last wolf in Scotland - and, implicitly, in all Britain - after that, in 1743. (Henry Shoemaker mentions the story in the section of Extinct Pennsylvania Animals that concerns wolves.)
^P. Swantoro (2002). Dari buku ke buku, sambung menyambung menjadi satu. Kepustakaan Populer Gramedia. ISBN:9789799023681.
^Richard Harding (2010). The Emergence of Britain's Global Naval Supremacy : The War Of 1739-1748. Boydell & Brewerr. ISBN:9781843835806.
