«BERI-BERI». The Encyclopaedia Britannica; A Dictionary of Arts, Sciences, Literature and General Information. Vol. III (AUSTRIA LOWER to BISECTRIX ) (11th ed.). Cambridge, England and New York: At the University Press. 1910. pp. 774–775. لە 23 October 2018 ھێنراوە – via Internet Archive. {{cite book}}: نرخەکانی ڕێکەوت بپشکنە لە: |access-date= (یارمەتی)
