2020, Changyong Yang, Sejung Yang, William O'Grady, Jejueo: the language of Korea’s Jeju Island, Honolulu, USA: University of Hawai‘i Press, →DOI, →ISBN, →JSTOR, page 95:
2020, Changyong Yang, Sejung Yang, William O'Grady, Jejueo: the language of Korea’s Jeju Island, Honolulu, USA: University of Hawai‘i Press, →DOI, →ISBN, →JSTOR, page 196: