APA

Weaver J., . (1943). Climatic relations of american barley production. New York-US: Geografical record.

Chicago

Weaver Jhon, . 1943. Climatic relations of american barley production. New York-US: Geografical record.

Harvard

Weaver J., . (1943). Climatic relations of american barley production. New York-US: Geografical record.

MLA

Weaver Jhon, . Climatic relations of american barley production. New York-US: Geografical record. 1943.