1 2 Jones, Daniel. Edited by Roach, Peter; Setter, Jane; and Esling, John. Cambridge English Pronouncing Dictionary. 18th ed. Cambridge and New York: University Press, 2011, p. 79.
1 2 Upton, Clive; Kretzschmar, William A.; and Konopka, Rafal. Oxford Dictionary of Pronunciation for Current English. New York: Oxford University Press, 2003, p. 151.
