* The official website for the Muskogee (Creek) Nation of Oklahoma* Acoustic vowel reduction in Creek: Effects of distinctive length and position in the word (pdf)* Mvskoke Nakcokv Eskerretv Esvhokkolat.
* The official website for the Muskogee (Creek) Nation of Oklahoma* Ethnologue report for Creek* Acoustic vowel reduction in Creek: Effects of distinctive length and position in the word (pdf)