APA

Woolley S. F., . (1949). Modern Europe. 1789-1945. London: Harrap.

Chicago

Woolley S F, . 1949. Modern Europe. 1789-1945. London: Harrap.

Harvard

Woolley S. F., . (1949). Modern Europe. 1789-1945. London: Harrap.

MLA

Woolley S F, . Modern Europe. 1789-1945. London: Harrap. 1949.