APA (7th ed.) Citation

Coolidge, C. (1959). Calvin Coolidge papers. Library of Congress.

Chicago Style (17th ed.) Citation

Coolidge, Calvin. Calvin Coolidge Papers. Washington: Library of Congress, 1959.

MLA (9th ed.) Citation

Coolidge, Calvin. Calvin Coolidge Papers. Library of Congress, 1959.

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