Bibliografi : hlm. 103-107
Judul asli : "Introduction to Work Study"
No Inv.: 112753/P/Perp/08/1c
No Inv.: 112759/P/Perp/08/1c
Bibliografi : hlm. 207-214 No Inv.: 135808/SM/Perp/14/1c~141132/PSM/Perp/14/1c~143030-143039/P/Perp/14/10
No Inv.: 114441/P/Perp/08/1c
Bibliografi : hlm 171-173
Bibliografi : hlm 143-144
Bibliografi : hlm. 171-172
Termasuk bibliografi No Inv.: 100733-100742/P/Perp/05/10c~104660-104669/P/Perp/06/10c~109304/S/Perp/07/1c~109812-109813/PSM/Perp/07/2c~116541-116545/P/Perp/09/5c