How to investigate the copyright status of a work.

APA Citation

Library of Congress. Copyright Office. (1989). How to investigate the copyright status of a work. Washington, D.C.: Copyright Office, Library of Congress.

MLA Citation

Library of Congress. Copyright Office. How to Investigate the Copyright Status of a Work. Washington, D.C.: Copyright Office, Library of Congress, 1989.

Warning: These citations may not always be complete (especially for serials).