APA (7th ed.) Zitazioa
Shelley, F. M. Structure, stability and section in American politics. Butterworth & Co.
Chicago Style (17th ed.) Zitazioa
Shelley, Fred M. Structure, Stability and Section in American Politics. s.l: Butterworth & Co.
MLA (9th ed.) Zitazioa
Shelley, Fred M. Structure, Stability and Section in American Politics. Butterworth & Co.
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