APA Style
Robertson, Ian. (1994).
Sosial Problem .
[s.l.]:
.
Chicago Style
Robertson, Ian.
Sosial Problem.
[s.l.]:
,
1994.
Buku.
MLA Style
Robertson, Ian.
Sosial Problem.
[s.l.]:
,
1994.
Buku.
Turabian Style
Robertson, Ian.
Sosial Problem.
[s.l.]:
,
1994.
Buku.