Cita APA (7th ed.)
Zimmerman, J. F. (2011). Horizontal federalism: Interstate relations. State University of New York Press.
Cita Chicago (17th ed.)
Zimmerman, Joseph Francis. Horizontal Federalism: Interstate Relations. Albany: State University of New York Press, 2011.
Cita MLA (9th ed.)
Zimmerman, Joseph Francis. Horizontal Federalism: Interstate Relations. State University of New York Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.