Byrne, J. (2018). Hellboy (1994), omnibus volume 1: Seed of destruction (Omnibus, Collected.). Dark Horse Comics, LLC..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रByrne, John. Hellboy (1994), Omnibus Volume 1: Seed of Destruction. Omnibus, Collected. Cleveland: Dark Horse Comics, LLC., 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रByrne, John. Hellboy (1994), Omnibus Volume 1: Seed of Destruction. Omnibus, Collected. Dark Horse Comics, LLC., 2018.
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