De Kroongetuige en de georganiseerde misdaad / P.J.P. Tak

Organized crime: the insider's guide to the world's most successful indusrty

Crime without frontiers: the worldwide expantion of organized crime and the pax mafiosa

Fenomena match-fixing dalam pertandingan olah raga: Kajian mengenai stigma dan organized crime = Match-fixing on sporting event: Study about stigma and organized crime

Gendai yakuza no ura chishiki : yami shakai no shinogi, onnna, kenryoku, sono subete = 現代ヤクザのウラ知識 : 闇社会のシノギ・女・権力, そのすべて！= Modern Yakuza back knowledge: surpassing-woman-power of darkness society, that all