APA (7th ed.) Zitazioa
ebrary, Inc, & Watson, R. P. (2012). The Obama presidency: A preliminary assessment. State University of New York Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Robert P. Watson. The Obama Presidency: A Preliminary Assessment. Albany: State University of New York Press, 2012.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Robert P. Watson. The Obama Presidency: A Preliminary Assessment. State University of New York Press, 2012.
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