Bibliografi : hlm. 205-208
Bibliografi : hlm. 280-281
Bibliografi : hlm. 173-178 No Inv.: 134091/PSM/Perp/13/1c
No Inv.: 4321-4330/P/Perp/97/10c~9630-9639/P/Perp/97/10c~113/PSM/Perp/97/1c~66871-66874/S/00/4c~124499/P/Perp/10/1c
No Inv.: 1735/S/Perp/92/1c~3216-3225/P/Perp/96/10c
Bibliografi :hlm 161-163
Judul asli : "Effective Supervision in a Factory"
Bibliografi : hlm. 251-259
Bibliografi : hlm. 207-214
Bibliografi : hlm. 245-247 No Inv.: 132425/PH/Perp/12/1c~135001/SM/Perp/13/1c