Wolff, Hans (April 1952). "Osage I: Phonemes and Historical Phonology". International Journal of American Linguistics. 18 (2): 63–68. doi:10.1086/464151. S2CID145019201.
endangeredalphabets.net
"Osage". Atlas of Endangered Alphabets. 29 November 2018. Retrieved 26 October 2021.
Wolff, Hans (April 1952). "Osage I: Phonemes and Historical Phonology". International Journal of American Linguistics. 18 (2): 63–68. doi:10.1086/464151. S2CID145019201.