APA

Wright J., . (1944). The terminology of certain map symnols. New York-US: Geografical record.

Chicago

Wright J.R, . 1944. The terminology of certain map symnols. New York-US: Geografical record.

Harvard

Wright J., . (1944). The terminology of certain map symnols. New York-US: Geografical record.

MLA

Wright J.R, . The terminology of certain map symnols. New York-US: Geografical record. 1944.