Haig, Geoffrey; Yaron Matras (2002). "Kurdish linguistics: a brief overview"(PDF). Sprachtypologie und Universalienforschung. 55 (1). Berlin: 5. Archived from the original(PDF) on 14 October 2013. Retrieved 27 April 2013.
Haig, Geoffrey; Yaron Matras (2002). "Kurdish linguistics: a brief overview"(PDF). Sprachtypologie und Universalienforschung. 55 (1). Berlin: 5. Archived from the original(PDF) on 14 October 2013. Retrieved 27 April 2013.