Style de citation APA (7e éd.)

Ryan, H. R. (1995). U.S. presidents as orators: A bio-critical sourcebook. Greenwood Press.

Style de citation Chicago (17e éd.)

Ryan, Halford Ross. U.S. Presidents as Orators: A Bio-critical Sourcebook. Westport, Conn: Greenwood Press, 1995.

Style de citation MLA (9e éd.)

Ryan, Halford Ross. U.S. Presidents as Orators: A Bio-critical Sourcebook. Greenwood Press, 1995.