Shelley, F. M. Structure, stability and section in American politics. Butterworth & Co.
Cita Chicago Style (17a ed.)Shelley, Fred M. Structure, Stability and Section in American Politics. s.l: Butterworth & Co.
Cita MLA (9a ed.)Shelley, Fred M. Structure, Stability and Section in American Politics. Butterworth & Co.
警告：这些引文格式不一定是100％准确.