- https://www.elibrary.imf.org/
- https://www.cabi.org/cabebooks/ebook/
- https://www.proquest.com
- https://link.springer.com
- https://www.mhebooklibrary.com
- https://www.taylorfrancis.com/
- https://www.bartleby.com
- https://www.bookyards.com
- http://www.freetechbooks.com/
- https://libguides.nus.edu.sg
- https://publishing.cdlib.org/ucpressebooks
- https://polpred.com/
- Open Journal of Political Science
- http://cn.oversea.cnki.net/law/default.aspx
- Google Scholar
- Google Books
Other libraries
ANAS Central Library of Science
The Library of the German Bundestag
Boris Yeltsin Presidential Library
Presidential Library of the Republic of Belarus
Alisher Navoi National Library of Uzbekistan
The National Library of France
National Parliamentary Library of Georgia
National Library of Kazakhstan
Martynas Mažvydas National Library of Lithuania