APA (7th ed.) Citation

Breckinridge, S. P. (1981). Papers of Sophonisba P. Breckinridge (1866-1948). Library of Congress, Photoduplication Service.

Chicago Style (17th ed.) Citation

Breckinridge, Sophonisba P. Papers of Sophonisba P. Breckinridge (1866-1948). [Washington, D.C.]: Library of Congress, Photoduplication Service, 1981.

MLA (9th ed.) Citation

Breckinridge, Sophonisba P. Papers of Sophonisba P. Breckinridge (1866-1948). Library of Congress, Photoduplication Service, 1981.

Warning: These citations may not always be 100% accurate.