APA (7th ed.) Citation

McClelland, R. (1861). Letter on the crisis. [publisher not identified].

Chicago Style (17th ed.) Citation

McClelland, Robert. Letter on the Crisis. [Detroit]: [publisher not identified], 1861.

MLA (9th ed.) Citation

McClelland, Robert. Letter on the Crisis. [publisher not identified], 1861.

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