Belova A., 2010, Kaliningrad Region as prospective centre for development of ecotourism in the South-East Baltic, Perspectives Baltic 21, Series No. 1, 48-50.
Bonn Declaration (UNESCO 2009). Ministerial Round Table on Quality Education, UNESCO, 2003, http://unesdoc.unesco.org/images/0018/001887/188799e.pdf. [access: 18.11.2016].
Education for Sustainable Development Lens: A Policy and Practice Review Tool, 2010, Education for Sustainable Development in Action Learning&Training Tools, no. 2.
Kopnina H., 2012a, Education for sustainable development (ESD): the turn away from 'environment' in environmental education?, Environmental Education Research, 18(5), 699-717.
Kopnina H., 2012b, Revisiting education for sustainable development (ESD): examining anthropocentric bias through the transition of environmental education to ESD, Sustainable Development, http://onlinelibrary.wiley.com/doi/10.1002/sd.529/abstract [access: 18.11.2016].
Kopnina H., Meijers F., 2014, Education for sustainable development (ESD): exploring theoretical and practical challenges, International Journal of Sustainability in Higher Education, 15(2),188-207.
Kropinova E.G., 2005, Regionalno-ekonomicheskiy analiz formirovaniya territorialnykh rekreatsionnykh sistem, SPb.: SPbSU Publishing House (in Russian).
Kropinova E.G., Volkova I.I., Belova A.V., 2015, Natural, Historical and Cultural Crossroads of Baltic, Kaliningrad: Pictorica Publisher.
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