APA (7th ed.) Citation

United States. Library of Congress. (1969). Index to the Theodore Roosevelt papers. U. S. Gov't. Print. Off.

Chicago Style (17th ed.) Citation

United States. Library of Congress. Index to the Theodore Roosevelt Papers. Washington: U. S. Gov't. Print. Off, 1969.

MLA (9th ed.) Citation

United States. Library of Congress. Index to the Theodore Roosevelt Papers. U. S. Gov't. Print. Off, 1969.