APA

Ewart J. S., . (1925). The roots and causes of the wars (1914-1918). New York: George H. Doran company.

Chicago

Ewart John Skirving, . 1925. The roots and causes of the wars (1914-1918). New York: George H. Doran company.

Harvard

Ewart J. S., . (1925). The roots and causes of the wars (1914-1918). New York: George H. Doran company.

MLA

Ewart John Skirving, . The roots and causes of the wars (1914-1918). New York: George H. Doran company. 1925.