Japan's Biggest Mob Group Splits Under Money, Police Pressure - WSJ
If the Yakuza are criminals, why don't the Japanese police simply arrest them? - Quora
Yakuza: Japan's armed venture capitalists - Asia Times
Yakuza boss arrested for making supermarket point card - Japan Today
Inside the acting agency where ex-mobsters seek redemption
YAKUZA, TEPCO AND ENTERTAINMENT INDUSTRY
The rise and fall of the yakuza, Japan's ruthless mafia gangs
Reviews: Yakuza Graveyard - IMDb
US arrests Japanese Yakuza boss over missile sales to Myanmar rebels
How to Play the Yakuza Games in Chronological Order