APA (7th ed.) Citation

Leonard, T. M. (2001). James K. Polk: A clear and unquestionable destiny. S.R. Books.

Chicago Style (17th ed.) Citation

Leonard, Thomas M. James K. Polk: A Clear and Unquestionable Destiny. Wilmington, Del.: S.R. Books, 2001.

MLA (9th ed.) Citation

Leonard, Thomas M. James K. Polk: A Clear and Unquestionable Destiny. S.R. Books, 2001.