APA

Watt D. C., . (1945). History of the world in the twenteith century century, Part1: 1899-1918. : Hodder & Stoughton & Christian Literature Crusade, Great Britain.

Chicago

Watt D C, . 1945. History of the world in the twenteith century century, Part1: 1899-1918. : Hodder & Stoughton & Christian Literature Crusade, Great Britain.

Harvard

Watt D. C., . (1945). History of the world in the twenteith century century, Part1: 1899-1918. : Hodder & Stoughton & Christian Literature Crusade, Great Britain.

MLA

Watt D C, . History of the world in the twenteith century century, Part1: 1899-1918. : Hodder & Stoughton & Christian Literature Crusade, Great Britain. 1945.