Mignola, M. (2018). Hellboy (1994), omnibus volume 2: Strange places (Omnibus, Collected.). Dark Horse Comics, LLC..
Cita Chicago Style (17a ed.)Mignola, Mike. Hellboy (1994), Omnibus Volume 2: Strange Places. Omnibus, Collected. Cleveland: Dark Horse Comics, LLC., 2018.
Cita MLA (8a ed.)Mignola, Mike. Hellboy (1994), Omnibus Volume 2: Strange Places. Omnibus, Collected. Dark Horse Comics, LLC., 2018.
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