Election Observation Handbook: Sixth Edition
http://www.osce.org/odihr/elections/68439
Handbook for Long-Term Election Observers
http://www.osce.org/odihr/elections/24678
Ukrainian Constitution of 1996 - English Text
http://www.brama.com/ua-gov/conste.html
Ukrainian Constitution with amendments (2004)
http://www.justice.gov/eoir//vll/country/foreign_law/ukraine/constitution.pdf
Ukrainian Constitution with amendments (2010)
http://www.wipo.int/wipolex/en/details.jsp?id=7587
Declaration of Principles for International Election Observation and Code of Conduct for International Election Observers.
https://www.ndi.org/files/1923_declaration_102705_0.pdf