GOPAL M. (2007). CONTROL SYSTEMS: PRINCIPLES AND DESIGN (2ND ED.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
Chicago-referens (17:e uppl.)GOPAL M. CONTROL SYSTEMS: PRINCIPLES AND DESIGN. 2ND ED. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.
MLA-referens (9:e uppl.)GOPAL M. CONTROL SYSTEMS: PRINCIPLES AND DESIGN. 2ND ED. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.