S., C. 1277 онд гуулин улсын вангаас хөх гүрний хубилай хаанд илгээсэн айлтгал: The offering letter which was sent by king of korea to king khubilai of yuan dynasty. Mongolian Journal of Foreign Languages and Cultures, [S. l.], v. 19, n. 430, p. 227–231, 2023. DOI: 10.22353/MJFLC2015124. Disponível em: https://journal.num.edu.mn/JOFLAC/article/view/4079. Acesso em: 11 jan. 2025.