APA

Baker O., . (1940). The plough up policy in britain. New York-US: Geografical record.

Chicago

Baker O.E, . 1940. The plough up policy in britain. New York-US: Geografical record.

Harvard

Baker O., . (1940). The plough up policy in britain. New York-US: Geografical record.

MLA

Baker O.E, . The plough up policy in britain. New York-US: Geografical record. 1940.