Stipčević, Aleksandar. The Illyrians: History and Culture. History and Culture Series. Noyes Press. 1977. 89. ISBN0815550529.. — "It is generally agreed, and rightly so, that the modern Albanian cap originates directly from the similar cap worn by the Illyrians.".
Recherches albanologiques: Folklore et ethnologie. Instituti Albanologijik i Prishtinës. 1982. 52.. — "Ne kuadrin e veshjeve me përkime ilire, të dokumentuara gjer më tani hyjnë tirqit, plisi, qeleshja e bardhë gjysmësferike, goxhufi-gëzofi etj".
Nagel. Albania. Nagel Publishers. 1990. 62. ISBN978-2-8263-0827-0.. — ""The qeleshe, the white felt cap worn by men, was a distinctively Albanian type of headgear both within the country and beyond its frontiers" […] "Among the mountain people of the north it was hemispherical in form; at Kukés in the form of a truncated cone"".
Stipčević, Aleksandar. The Illyrians: history and culture. Noyes Press. 1977. ISBN9780815550525.. — "From among the various caps that the Illyrians wore, one can distinguish four different types. On the monument from Zenica one can see the more common type of skullcap. Fundamentally it does not differ from the present-day small, white Albanian fez known as a qeleshe.".