Cita APA (7th ed.)

HALSALL FRED. (2004). DATA COMMUNICATIONS COMPUTER NETWORKS AND OPEN SYSTEMS (4TH.). PEARSON EDUCATION.

Cita Chicago (17th ed.)

HALSALL FRED. DATA COMMUNICATIONS COMPUTER NETWORKS AND OPEN SYSTEMS. 4TH. NEW DELHI: PEARSON EDUCATION, 2004.

Cita MLA (9th ed.)

HALSALL FRED. DATA COMMUNICATIONS COMPUTER NETWORKS AND OPEN SYSTEMS. 4TH. PEARSON EDUCATION, 2004.