GOPAL M. (1997). CONTROL SYSTEMS PRINCIPLES & DESIGN. TATA MC-GRAW HILL PUBLISHING CO.LTD.
Chicago Style aipamenaGOPAL M. CONTROL SYSTEMS PRINCIPLES & DESIGN. NEW DELHI: TATA MC-GRAW HILL PUBLISHING CO.LTD, 1997.
MLA aipamenaGOPAL M. CONTROL SYSTEMS PRINCIPLES & DESIGN. TATA MC-GRAW HILL PUBLISHING CO.LTD, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.