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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColumbia Pictures Corporation, et al. Hellboy. Director's cut ; [Blu-ray version.]. Culver City, Calif.: Sony Pictures Home Entertainment, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रColumbia Pictures Corporation, et al. Hellboy. Director's cut ; [Blu-ray version.]. Sony Pictures Home Entertainment, 2007.
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