1. Into the metaverse: the essential guide to the business opportunities of the web3 era Hackl, Cathy, London, UK : Bloomsbury Business, [2023] GED113
2. Hypermedia systems Gross, Carson, Mountain View, Calif. : Independently published, [2023] MDIT110 GDM510
3. Navigating the metaverse: a guide to limitless possibilities in a WEB 3.0 world Hackl, Cathy, Hoboken, New Jersey : John Wiley & Sons, Inc., [2022] GED113
4. The metaverse handbook: innovating for the internet's next tectonic shift Terry, Quharrison, Hoboken, New Jersey : John Wiley & Sons, [2022] GED113
