Main Sources:
- UK Gambling Commission: Gambling Industry Statistics
- Statista: www.statista.com
- Roy Morgan Gambling Research: http://www.roymorgan.com/
- Global Betting and Gaming Consultants (GBGC): http://www.gbgc.com/gbgcs-global-gambling-report-2016/
- H2 Gambling Capital (H2GC):https://h2gc.com/
DICJ (Macau): http://www.dicj.gov.mo/web/en/information/DadosEstat_mensal/2016/index.html - UNLV Center For Gaming Research: http://gaming.unlv.edu
- New Jersey Division of Gaming Enforcement (DGE): http://www.nj.gov/oag/ge/index.htm
- European Gaming & Betting Association (EGBA): http://www.egba.eu/
- https://newzoo.com/insights/rankings/top-100-countries-by-game-revenues/
- https://www.statista.com/statistics/552821/gambling-losses-per-adult-by-country-worldwide/
- https://www.statista.com/chart/1455/macau-makes-10-times-more-revenue-than-vegas-per-visitor/
- http://www.nj.gov/oag/ge/financialandstatisticalinfo.html
- http://gaming.unlv.edu/reports/national_annual_revenues.pdf
- https://www.statista.com/statistics/543361/online-gambling-participation-united-kingdom-uk/
- http://www.roymorgan.com/findings/6511-over-a-million-australians-play-poker-machines-at-least-weekly-june-2015-201510200408
- http://www.economist.com/blogs/graphicdetail/2014/02/daily-chart-0
- https://www.statista.com/statistics/374575/social-casino-worldwide-market-size/
- https://www.statista.com/statistics/512647/social-casino-companies-market-share-worldwide/
- https://www.statista.com/statistics/268075/frequency-of-poker-playing-online-for-money-2009/
- http://www.businesswire.com/news/home/20160701005657/en/Global-Gambling-Market-Growth-5.7-CAGR-2022
- https://www.statista.com/forecasts/409832/united-states-casinos-revenue-forecast-naics-71321