APA

kohn C. E., . (1945). Population trends in the united states since 1940. New York-US: Geografical record.

Chicago

kohn Clyde E, . 1945. Population trends in the united states since 1940. New York-US: Geografical record.

Harvard

kohn C. E., . (1945). Population trends in the united states since 1940. New York-US: Geografical record.

MLA

kohn Clyde E, . Population trends in the united states since 1940. New York-US: Geografical record. 1945.