Kaplan, D. E. (1986). Yakuza: The explosive account of Japan's criminal underworld. New York: Collier Books.
शिकागो स्टाइल उद्धरणKaplan, David E. Yakuza: The Explosive Account of Japan's Criminal Underworld. New York: Collier Books, 1986.
एमएलए उद्धरणKaplan, David E. Yakuza: The Explosive Account of Japan's Criminal Underworld. New York: Collier Books, 1986.
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