Corporate social responsibility: doing the most good for your company and your cause / Philip Kotler and Nancy Lee; ISBN 0-471-47611-0; printed in USA;

International Journal of Economic Practices and Theories”, Vol. 2, No. 2, 2012 (April);

Supply Chain Sustainability – A Practical Guide for Continuous Improvement – 2010, UN Global Compact Office and Business for Social Responsibility;

World Travel Market 2014 Industry Report – http://www.hospitalitynet.org, 2015;

http://ec.europa.eu/enterprise/sectors/tourism/quality-label/index_en.htm;

http://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri= CELEX:52014PC0085&qid= 1423649717341&from=EN;

FSC – Forest Stewardship Council ;

Global Code of Ethics for Tourism – http://ethics.unwto.org/en/content/global-code-ethics-tourism;