Smith, S. S., & Springer, M. J. (2009). Reforming the Presidential nomination process. Brookings Institution Press.
Trích dẫn kiểu ChicagoSmith, Steven S., và Melanie J. Springer. Reforming the Presidential Nomination Process. Brookings Institution Press, 2009.
Deismireacht MLASmith, Steven S., và Melanie J. Springer. Reforming the Presidential Nomination Process. Brookings Institution Press, 2009.
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