Lerkh, P. (1856). Izsl︠i︡edovan̄i︠i︡a ob iranskikh kurdakh i ikh predkakh, s︠i︡evernykh khalde︠i︡akh. V Tip. Imp. akadem̄ii nauk.
Dyfyniad Arddull ChicagoLerkh, Petr. Izsl︠i︡edovan̄i︠i︡a Ob Iranskikh Kurdakh I Ikh Predkakh, S︠i︡evernykh Khalde︠i︡akh. Sanktpeterburg: V Tip. Imp. akadem̄ii nauk, 1856.
Dyfyniad MLALerkh, Petr. Izsl︠i︡edovan̄i︠i︡a Ob Iranskikh Kurdakh I Ikh Predkakh, S︠i︡evernykh Khalde︠i︡akh. V Tip. Imp. akadem̄ii nauk, 1856.
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