Encyclopedia of Dog Breeds. Parragon. p. 323. ISBN 0-7525-8018-3 ^ Lambert, Cathy. Getting to Know English Cockers. Animalinfo Publications. p. 20. ISBN 978-1-921537-15-8
com/archives/la-xpm-1998-oct-29-fi-37053-story.html 10 April 2019閲覧。 ^ a b Dunkley, Cathy; Brodesser, Claude (September 23, 2003). “Spyglass splits” (英語). Variety