1. Charta der Vielfalt . Available at: https://www.charta-der-vielfalt.de/en/ (accessed 10 June 2021).
2. Business Wire . ‘GreenPrint survey finds consumers want to buy eco-friendly products but don’t know how to identify them’. Available at: https://www.businesswire.com/news/home/20210322005061/en/GreenPrint-Survey-Finds-Consumers-Want-to-Buy-Eco-Friendly-Products-but-Don%E2%80%99t-Know-How-to-Identify-Them#:~:text=75%25%20of%20Millennials%20are%20willing impact%20of%20products%20they%20buy (accessed 10 June 2021).
3. Hyatt Hotels . ‘Our Planet’. Available at: https://about.hyatt.com/en/hyatt-thrive/our-planet.html (accessed 10 June 2021).
4. Marriott Hotels . ‘Serve 360’. Available at: https://serve360.marriott.com/ (accessed 10 June 2021).
5. Sources of information as determinants of novelty of innovation in manufacturing firms: evidence from the 1999 statistics Canada innovation survey