Bibliografi : lembar 211-212
Bibliografi : hlm. 76
No Inv.: 74127/PSM/00/1c
Judul asli : "Ethics in Engineering"
Judul asli : "Der Dreshstrom"
No Inv.: 141637-141641/P/Perp/14/5c
Bibliografi : hlm. 373
No Inv.: 129091/PH/Perp/10/1c~135453/SM/Perp/13/1c~134861/SM/Perp/13/1c~139506/P/Perp/14/1c~141306-141309/P/Perp/14/4c