Gaya APA
Barrett, D. (2012).
CompTIA Security+ SYO-301 Practice Questions Exam Cram, Third Edition (Ed.ke-3).
:
Pearson Education.
Gaya MLA
Barrett, Diane.
"CompTIA Security+ SYO-301 Practice Questions Exam Cram, Third Edition".
Ed.ke-3
:
Pearson Education,
2012.
Textbook.