Donald Kenrick (Hertfordshire: University of Hertfordshire Press, 2006), 171. ^ 宮本和弥 2007, pp. 101. ^ Zoltan D., Barany (2002). The East European gypsies:
Donald Kenrick (2004). Gypsies: From the Ganges to the Thames. Univ of Hertfordshire Press. pp. 24–. ISBN 978-1-902806-23-5. https://books.google.co.jp/books