Cita APA (7th ed.)

PROAKIS J.G. (1998). COMMUNICATIONS SYSTEM ENGG. PHI.

Cita Chicago (17th ed.)

PROAKIS J.G. COMMUNICATIONS SYSTEM ENGG. SINGAPORE: PHI, 1998.

Cita MLA (9th ed.)

PROAKIS J.G. COMMUNICATIONS SYSTEM ENGG. PHI, 1998.