Bibliografi : hlm. 101-102 No Inv.: 136525/SM/Perp/13/1c
Bibliografi : hlm. 285-294
No Inv.: 76970-76979/S/01/10c
No Inv.: 84549/P/Perp/FMIPA/03/1c
Bibliografi : hlm. 297-301
Judul asli :"Signals and system"
No Inv.: 120617/SM/Perp/09/1c
Judul asli : "Modern Control Engineering"
No Inv.: 05/S/Perp/93/1c~7329-7339/P/Perp/92/10c~1651-1652/P/Perp/92/2c~1661/S/Perp/87/1c~83645-83649/P/Perp/02/5c~