APA-čujuhus (7. p.)
Spitzer, R. J. (2012). The presidency and public policy: The four arenas of presidential power (Paperback ed.). University of Alabama Press.
Chicago-čujuhus (17. p.)
Spitzer, Robert J. The Presidency and Public Policy: The Four Arenas of Presidential Power. Paperback ed. Tuscaloosa: University of Alabama Press, 2012.
MLA-čujuhus (9. p.)
Spitzer, Robert J. The Presidency and Public Policy: The Four Arenas of Presidential Power. Paperback ed. University of Alabama Press, 2012.
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