Haro, R. P. (1969). A directory of governmental, public, and urban affairs research centers in the United States. California: University of California. Institute of Governmental Affairs.
Παραπομπή Chicago StyleHaro, Robert P. A Directory of Governmental, Public, and Urban Affairs Research Centers in the United States. California: University of California. Institute of Governmental Affairs, 1969.
Παραπομπή MLAHaro, Robert P. A Directory of Governmental, Public, and Urban Affairs Research Centers in the United States. California: University of California. Institute of Governmental Affairs, 1969.
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