Cryptography and network security - Principles and practice de William Stallings
Libro usado (Castellano) (Inglés)
Data and computer communications de William Stallings
Network and internetwork security - Principles and practice de William Stallings
Networking Standards - A guide to OSI, ISDN, LAN de William Stallings
Operating systems de William Stallings
Operating Systems - Internals and desing principles de William Stallings