Cita APA (7th ed.)

U. S. Library of Congress. (1942). Special facilities for research. U. S. Government Printing Office.

Cita Chicago (17th ed.)

U. S. Library of Congress. Special Facilities for Research. [Washington: U. S. Government Printing Office, 1942.

Cita MLA (9th ed.)

U. S. Library of Congress. Special Facilities for Research. U. S. Government Printing Office, 1942.