Columbia subject headings:
Harvard subject headings:
Chʻoe, Tŏk-chung Yŏnhaengnok
Mongols--History
Pak, Chi-wŏn, 1737-1805. Yŏrha ilgi.
Sŏ, Ho-su, 1736-1799 Yŏnhaenggi
Princeton subject headings:
China--Description and travel--Early works to 1800.
Mongols--History--Sources.
Mongols--Korea--History--Sources.