(en) Douglas Charles Clavering, « Journal of a voyage to Spitzbergen and the east coast of Greenland, in His Majesty's ship Griper », Edinburgh New Philosophical Journal, vol. 9, , p. 21–24 (lire en ligne)
(en) Peter C. Lent, Muskoxen and Their Hunters: A History, Norman, OK, University of Oklahoma Press, , 91, 132 (ISBN0-8061-3170-5, lire en ligne)
