Gaya APA

Stallings, W. (2011). e-Book Network Security Essentials: Applications and Standards (Cet. 4). : Pearson Education (Prentice Hall).

Gaya MLA

Stallings, William. "e-Book Network Security Essentials: Applications and Standards". Cet. 4 : Pearson Education (Prentice Hall), 2011. Electronic Resource.