Columbia subject headings:
Harvard subject headings:
Sŏ, Chae-p'il, 1866-1951--Bibliography.
Sŏ, Chae-p'il, 1866-1951--Political and social views.
Tongnip sinmun--Bibliography.
Princeton subject headings:
Sŏ, Chae-p'il, 1866-1951--Bibliography.