William Stallings

Network Security Essentials - Applications and Standards (4. ed., internat. ed.).

Business data communications (6.ed.).

Computer Organization and Architecture - Designing for Performance (7. ed.).

Computer organization and architecture - designing for performance (6. ed.).

Cryptography and network security - principles and practice (3. ed.).

Network security essentials - applications and standards (2. ed.).

Operating systems - internals and design principles (4. ed.).

Data and computer communications (6. ed.).

Cryptography and network security - principles and practice (2. ed.).

Computer organization and architecture - designing for performance (4. ed.).

Computer communications - architectures, protocols, and standards (3. ed.).

Reduced instruction set computers (2. ed.).

Computer communications - tutorial: architectures, protocols and standards (2. ed.).