Cita APA (7th ed.)

ebrary, Inc, & Watson, R. P. (2012). The Obama presidency: A preliminary assessment. State University of New York Press.

Cita Chicago (17th ed.)

ebrary, Inc, i Robert P. Watson. The Obama Presidency: A Preliminary Assessment. Albany: State University of New York Press, 2012.

Cita MLA (9th ed.)

ebrary, Inc, i Robert P. Watson. The Obama Presidency: A Preliminary Assessment. State University of New York Press, 2012.