In the CIA World Factbook, the description of each country includes information about "Location" under the heading "Geography", where the country is classified into a region. The following countries are included in their classification "Southeast Europe":
The Stability Pact for South Eastern Europe (SPSEE) included Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Kosovo, Moldova, Montenegro, North Macedonia, Romania and Serbia as member partners.
The South-East European Cooperation Process (SEECP) includes Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Kosovo, Moldova, Montenegro, North Macedonia, Romania, Serbia, Slovenia and Turkey as member partners.
The Southeast European Cooperative Initiative (SECI) includes Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Moldova, Montenegro, North Macedonia, Romania, Serbia, Slovenia and Turkey as member partners.
The EU-co-funded South East Europe Transnational Cooperation Programme includes the whole territory of Albania, Austria, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Hungary, North Macedonia, Montenegro, Moldova, Romania, Serbia, Slovakia, Slovenia, and parts of Italy and Ukraine as part of the "programme area".
Studies of the World Bank treat Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Moldova, North Macedonia, Romania and Serbia as the eight South Eastern European countries (SEE8).
^Armstrong, Werwick. Anderson, James (2007). "Borders in Central Europe: From Conflict to Cooperation". Geopolitics of European Union Enlargement: The Fortress Empire. Routledge. p. 165. ISBN 978-1-134-30132-4.CS1 maint: uses authors parameter (link)
^Andrew Geddes, Charles Lees, Andrew Taylor : "The European Union and South East Europe: The Dynamics of Europeanization and multilevel governance", 2013, Routledge
^Klaus Liebscher, Josef Christl, Peter Mooslechner, Doris Ritzberger-Grünwald : "European Economic Integration and South-East Europe: Challenges and Prospects", 2005, Edward Elgar Publishing Limited
^"A List of Countries That Make up the Balkan Peninsula". www.ThoughtCo.com.
^"Programme summary", South East Europe (SEE): Operational Programme, South East Europe Transnational Cooperation Programme, 28 November 2013, p. 6
^Harry G. Broadman (2004). Building Market Institutions in South Eastern Europe: Comparative Prospects for Investment and Private Sector Development. World Bank Publications. p. xviii. ISBN 978-0-8213-5776-7.
^World Health Organization. Regional Office for Europe; Council of Europe Development Bank (2006). Health and Economic Development in South-eastern Europe. World Health Organization. pp. 5–. ISBN 978-92-890-2295-8.
^"South East Europe Regular Economic Report". World Bank.
^"Regional Office in South Eastern Europe - Global Focus". reporting.unhcr.org.
Paul L. Horecky (ed.), Southeastern Europe: A guide to basic publications, Chicago: The University of Chicago Press, 1969.
Jelavich, Barbara (1983a). History of the Balkans: Eighteenth and Nineteenth Centuries. 1. Cambridge University Press. ISBN 9780521274586.
Jelavich, Barbara (1983b). History of the Balkans: Twentieth Century. 2. Cambridge University Press. ISBN 9780521274593.
Ekavi Athanassaopolou (2013). Organized Crime in Southeast Europe. Routledge. pp. 6–. ISBN 978-1-317-99945-4.
Media related to Southeastern Europe at Wikimedia Commons