Judul asli : "Electric Machinery"
No Inv.: 87513-87514/P/Perp/04/2c
Bibliografi : hlm. 177-181
No Inv.: 74127/PSM/00/1c
No Inv.: 10283-10284/P/Perp/92/2c~4925/P/00/1c~66069/P/00/1c
No Inv.: 1777/P/Perp/91/1c
No Inv.: 1097-1099/P/Perp/92/3c~8064-8068/P/Perp/92/5c~