APA Format
Kirkup, Thomas. (1920).
A History of socialism / Thomas Kirkup
. London :: A & C Black,.
MLA Format
Kirkup, Thomas.
A History of socialism / Thomas Kirkup
. London :: A & C Black,, 1920
Chicago Format
Kirkup, Thomas. A History of socialism / Thomas Kirkup. London :: A & C Black,, 1920.