APA (7th ed.) Citation

Mignola, M. (2021). Hellboy universe essentials: Hellboy. Dark Horse Comics, LLC..

Chicago Style (17th ed.) Citation

Mignola, Mike. Hellboy Universe Essentials: Hellboy. Cleveland: Dark Horse Comics, LLC., 2021.

MLA (8th ed.) Citation

Mignola, Mike. Hellboy Universe Essentials: Hellboy. Dark Horse Comics, LLC., 2021.

Warning: These citations may not always be 100% accurate.