SITOGRAFIA

American Hotel & Lodging Educational Institute (AHLEI): www.ahlei.org

Financial Accounting Standards Board (FASB): www.fasb.org

HotStats Ltd.: www.hotstats.com

ISTAT: www.istat.it

Mariott International: http://hotel-development.marriott.com

STR Global Inc.: https://str.com/it

World Green Building Council: www.worldgbc.org