Cheju Island | South Korea’s Largest Island & Tourist Destination | Britannica [online]. www.britannica.com, 2023-12-05, [cit. 2023-12-07]. Dostupné online. (po anglicky)
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YANG, Changyong; YANG, Sejung; O’GRADY, William. Jejueo: The Language of Korea’s Jeju Island. [s.l.] : University of Hawaii Press, 2019-11-30. Google-Books-ID: nlvGDwAAQBAJ. Dostupné online.ISBN 978-0-8248-7443-8. (po anglicky)
