A history of socialism,

MLA

Kirkup, Thomas. A History of Socialism. 5th edition, revised and largely rewritten London,: A. and C. Black, 1920.

APA

Kirkup, T. (1920). A history of socialism. 5th edition, revised and largely rewritten London,: A. and C. Black.

Chicago

Kirkup, Thomas, A History of Socialism,. 5th edition, revised and largely rewritten London,: A. and C. Black, 1920.