APA (7th ed.) Citation

Library of Congress. Division of Bibliography. (1939). Radio and radio broadcasting, selected list of recent references supplementing previous lists. [s.n.].

Chicago Style (17th ed.) Citation

Library of Congress. Division of Bibliography. Radio and Radio Broadcasting, Selected List of Recent References Supplementing Previous Lists. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

Library of Congress. Division of Bibliography. Radio and Radio Broadcasting, Selected List of Recent References Supplementing Previous Lists. [s.n.], 1939.