APA (7th ed.) Citation

Messier, R. GSEC GIAC security essentials certification: Exam guide.

Chicago Style (17th ed.) Citation

Messier, Ric. GSEC GIAC Security Essentials Certification: Exam Guide.

MLA (9th ed.) Citation

Messier, Ric. GSEC GIAC Security Essentials Certification: Exam Guide.

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