APA (7th ed.) Citation

Graysmith, R. (2018). Zodiac unmasked: The identity of america's most elusive serial killer revealed (Unabridged.). Tantor Media.

Chicago Style (17th ed.) Citation

Graysmith, Robert. Zodiac Unmasked: The Identity of America's Most Elusive Serial Killer Revealed. Unabridged. Old Saybrook: Tantor Media, 2018.

MLA (8th ed.) Citation

Graysmith, Robert. Zodiac Unmasked: The Identity of America's Most Elusive Serial Killer Revealed. Unabridged. Tantor Media, 2018.

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