Author	Title	Edition	Publisher	Year	Series	Number	ISBN	ISSN	URL
Skowronek, Stephen and Engel, Stephen M. and Ackerman, Bruce A.	The progressives' century : political reform, constitutional government, and the modern American state		Yale University Press	2016	The Yale ISPS series		9780300204841,9780300230499		https://ci.nii.ac.jp/ncid/BB23257313