APA (7th ed.) Citation

Walker, M. CEH? certified ethical hacker: All-in-One Exam Guide / (Second Edition.).

Chicago Style (17th ed.) Citation

Walker, Matthew. CEH? Certified Ethical Hacker: All-in-One Exam Guide /. Second Edition.

MLA (8th ed.) Citation

Walker, Matthew. CEH? Certified Ethical Hacker: All-in-One Exam Guide /. Second Edition.

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