Woodhouse, Robert. «Delabialization after *u and the distribution of labiovelars in dialectal Proto-Indo-European . 845». в Essays in the History of Languages and Linguistics: Dedicated to Marek Stachowski on the Occasion of His 60th Birthday, под редакцией Michał Németh, Barbara Podolak, Mateusz Urban, и Dariusz R. Piwowarczyk. Poland: Księgarnia Akademicka Publishing, 2017. просмотрено ноябрь 6, 2026. https://books.akademicka.pl/publishing/catalog/book/484/chapter/10829.